./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_of_cslls.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_of_cslls.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V --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 e174a1790a7df4dcba920aa7097618d66c8703aa13de1aa6af1a2c5f7cb0971c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:51:54,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:51:54,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:51:54,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:51:54,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:51:54,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:51:54,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:51:54,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:51:54,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:51:54,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:51:54,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:51:54,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:51:54,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:51:54,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:51:54,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:51:54,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:51:54,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:51:54,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:51:54,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:51:54,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:51:54,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:51:54,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:51:54,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:51:54,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:51:54,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:51:54,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:51:54,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:51:54,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:51:54,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:51:54,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:51:54,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:51:54,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:51:54,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:51:54,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:51:54,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:51:54,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:51:54,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:51:54,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:51:54,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:51:54,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:51:54,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:51:54,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:51:54,467 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:51:54,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:51:54,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:51:54,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:51:54,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:51:54,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:51:54,474 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:51:54,474 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:51:54,474 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:51:54,475 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:51:54,476 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:51:54,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:51:54,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:51:54,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:51:54,477 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:51:54,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:51:54,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:51:54,478 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:51:54,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:51:54,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:51:54,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:51:54,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:51:54,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:51:54,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:51:54,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:51:54,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:51:54,484 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:51:54,485 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:51:54,485 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:51:54,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:51:54,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:51:54,486 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:51:54,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:51:54,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:51:54,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:51:54,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:54,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:51:54,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:51:54,488 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:51:54,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:51:54,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:51:54,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:51:54,490 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_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e174a1790a7df4dcba920aa7097618d66c8703aa13de1aa6af1a2c5f7cb0971c [2021-11-23 03:51:54,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:51:54,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:51:54,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:51:54,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:51:54,857 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:51:54,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/memsafety-ext/tree_of_cslls.i [2021-11-23 03:51:54,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/data/6aec8a388/3a588820dbc1402d9a3c5df96fdb74ba/FLAG38839bf85 [2021-11-23 03:51:55,553 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:51:55,554 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/sv-benchmarks/c/memsafety-ext/tree_of_cslls.i [2021-11-23 03:51:55,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/data/6aec8a388/3a588820dbc1402d9a3c5df96fdb74ba/FLAG38839bf85 [2021-11-23 03:51:55,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/data/6aec8a388/3a588820dbc1402d9a3c5df96fdb74ba [2021-11-23 03:51:55,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:51:55,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:51:55,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:51:55,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:51:55,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:51:55,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a24ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55, skipping insertion in model container [2021-11-23 03:51:55,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:51:55,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:51:56,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:51:56,389 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:51:56,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:51:56,494 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:51:56,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56 WrapperNode [2021-11-23 03:51:56,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:51:56,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:51:56,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:51:56,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:51:56,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,571 INFO L137 Inliner]: procedures = 123, calls = 63, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 216 [2021-11-23 03:51:56,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:51:56,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:51:56,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:51:56,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:51:56,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:51:56,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:51:56,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:51:56,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:51:56,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (1/1) ... [2021-11-23 03:51:56,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:56,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:56,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:51:56,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:51:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:51:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:51:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:51:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:51:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:51:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:51:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:51:56,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:51:56,842 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:51:56,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:51:57,525 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:51:57,651 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:51:57,651 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-23 03:51:57,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:57 BoogieIcfgContainer [2021-11-23 03:51:57,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:51:57,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:51:57,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:51:57,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:51:57,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:51:55" (1/3) ... [2021-11-23 03:51:57,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db49daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:57, skipping insertion in model container [2021-11-23 03:51:57,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:56" (2/3) ... [2021-11-23 03:51:57,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db49daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:57, skipping insertion in model container [2021-11-23 03:51:57,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:57" (3/3) ... [2021-11-23 03:51:57,666 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_of_cslls.i [2021-11-23 03:51:57,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:51:57,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 104 error locations. [2021-11-23 03:51:57,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:51:57,724 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 [2021-11-23 03:51:57,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2021-11-23 03:51:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 78 states have (on average 2.6025641025641026) internal successors, (203), 182 states have internal predecessors, (203), 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) [2021-11-23 03:51:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-23 03:51:57,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:57,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-23 03:51:57,752 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:51:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:57,758 INFO L85 PathProgramCache]: Analyzing trace with hash 11660, now seen corresponding path program 1 times [2021-11-23 03:51:57,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:57,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983393439] [2021-11-23 03:51:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:57,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:51:57,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:57,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983393439] [2021-11-23 03:51:57,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983393439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:57,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:57,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 03:51:57,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745226814] [2021-11-23 03:51:57,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:57,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:51:57,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:51:57,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:51:57,975 INFO L87 Difference]: Start difference. First operand has 183 states, 78 states have (on average 2.6025641025641026) internal successors, (203), 182 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-23 03:51:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:58,260 INFO L93 Difference]: Finished difference Result 247 states and 267 transitions. [2021-11-23 03:51:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:51:58,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-23 03:51:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:58,282 INFO L225 Difference]: With dead ends: 247 [2021-11-23 03:51:58,283 INFO L226 Difference]: Without dead ends: 245 [2021-11-23 03:51:58,286 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 [2021-11-23 03:51:58,290 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 172 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:58,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 159 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:51:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-23 03:51:58,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 173. [2021-11-23 03:51:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 78 states have (on average 2.3974358974358974) internal successors, (187), 172 states have internal predecessors, (187), 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) [2021-11-23 03:51:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2021-11-23 03:51:58,341 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 2 [2021-11-23 03:51:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:58,341 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2021-11-23 03:51:58,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-23 03:51:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2021-11-23 03:51:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-23 03:51:58,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:58,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-23 03:51:58,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:51:58,343 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:51:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash 11661, now seen corresponding path program 1 times [2021-11-23 03:51:58,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:58,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744702387] [2021-11-23 03:51:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:58,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:51:58,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:58,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744702387] [2021-11-23 03:51:58,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744702387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:58,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:58,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 03:51:58,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027105668] [2021-11-23 03:51:58,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:58,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:51:58,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:51:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:51:58,391 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-23 03:51:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:58,688 INFO L93 Difference]: Finished difference Result 287 states and 314 transitions. [2021-11-23 03:51:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:51:58,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-23 03:51:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:58,693 INFO L225 Difference]: With dead ends: 287 [2021-11-23 03:51:58,693 INFO L226 Difference]: Without dead ends: 287 [2021-11-23 03:51:58,694 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 [2021-11-23 03:51:58,700 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 134 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:58,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 236 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:51:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-23 03:51:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 168. [2021-11-23 03:51:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 78 states have (on average 2.3333333333333335) internal successors, (182), 167 states have internal predecessors, (182), 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) [2021-11-23 03:51:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 182 transitions. [2021-11-23 03:51:58,734 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 182 transitions. Word has length 2 [2021-11-23 03:51:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:58,734 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 182 transitions. [2021-11-23 03:51:58,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-23 03:51:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 182 transitions. [2021-11-23 03:51:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:51:58,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:58,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:58,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:51:58,741 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:51:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash -887844972, now seen corresponding path program 1 times [2021-11-23 03:51:58,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:58,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499831069] [2021-11-23 03:51:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:58,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:51:58,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:58,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499831069] [2021-11-23 03:51:58,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499831069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:58,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:58,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:51:58,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311231735] [2021-11-23 03:51:58,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:58,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:51:58,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:51:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:51:58,839 INFO L87 Difference]: Start difference. First operand 168 states and 182 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-11-23 03:51:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:59,122 INFO L93 Difference]: Finished difference Result 167 states and 181 transitions. [2021-11-23 03:51:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:51:59,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 [2021-11-23 03:51:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:59,124 INFO L225 Difference]: With dead ends: 167 [2021-11-23 03:51:59,125 INFO L226 Difference]: Without dead ends: 167 [2021-11-23 03:51:59,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:51:59,126 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 4 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:59,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 396 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:51:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-23 03:51:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-23 03:51:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 78 states have (on average 2.3205128205128207) internal successors, (181), 166 states have internal predecessors, (181), 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) [2021-11-23 03:51:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 181 transitions. [2021-11-23 03:51:59,144 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 181 transitions. Word has length 7 [2021-11-23 03:51:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:59,145 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 181 transitions. [2021-11-23 03:51:59,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-11-23 03:51:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 181 transitions. [2021-11-23 03:51:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:51:59,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:59,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:59,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:51:59,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:51:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash -887844971, now seen corresponding path program 1 times [2021-11-23 03:51:59,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:59,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881797039] [2021-11-23 03:51:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:59,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:51:59,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881797039] [2021-11-23 03:51:59,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881797039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:59,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:59,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:51:59,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576484255] [2021-11-23 03:51:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:59,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:51:59,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:51:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:51:59,319 INFO L87 Difference]: Start difference. First operand 167 states and 181 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-11-23 03:51:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:59,615 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-11-23 03:51:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:51:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 [2021-11-23 03:51:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:59,617 INFO L225 Difference]: With dead ends: 166 [2021-11-23 03:51:59,617 INFO L226 Difference]: Without dead ends: 166 [2021-11-23 03:51:59,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:51:59,619 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 2 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:59,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 409 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:51:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-23 03:51:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-23 03:51:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 78 states have (on average 2.3076923076923075) internal successors, (180), 165 states have internal predecessors, (180), 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) [2021-11-23 03:51:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 180 transitions. [2021-11-23 03:51:59,658 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 180 transitions. Word has length 7 [2021-11-23 03:51:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:59,659 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 180 transitions. [2021-11-23 03:51:59,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-11-23 03:51:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 180 transitions. [2021-11-23 03:51:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 03:51:59,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:59,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:59,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:51:59,662 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:51:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1371063296, now seen corresponding path program 1 times [2021-11-23 03:51:59,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:59,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274947603] [2021-11-23 03:51:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:59,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:51:59,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:59,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274947603] [2021-11-23 03:51:59,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274947603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:59,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:59,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:51:59,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880010687] [2021-11-23 03:51:59,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:59,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:51:59,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:51:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:51:59,835 INFO L87 Difference]: Start difference. First operand 166 states and 180 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:00,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:00,223 INFO L93 Difference]: Finished difference Result 312 states and 338 transitions. [2021-11-23 03:52:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:52:00,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 03:52:00,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:00,226 INFO L225 Difference]: With dead ends: 312 [2021-11-23 03:52:00,226 INFO L226 Difference]: Without dead ends: 312 [2021-11-23 03:52:00,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:52:00,228 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 326 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:00,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 180 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:52:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-23 03:52:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 162. [2021-11-23 03:52:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 78 states have (on average 2.2564102564102564) internal successors, (176), 161 states have internal predecessors, (176), 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) [2021-11-23 03:52:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 176 transitions. [2021-11-23 03:52:00,244 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 176 transitions. Word has length 10 [2021-11-23 03:52:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:00,246 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 176 transitions. [2021-11-23 03:52:00,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 176 transitions. [2021-11-23 03:52:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:52:00,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:00,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:00,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:52:00,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:00,252 INFO L85 PathProgramCache]: Analyzing trace with hash 446710760, now seen corresponding path program 1 times [2021-11-23 03:52:00,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:00,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266159445] [2021-11-23 03:52:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:00,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:00,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:00,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266159445] [2021-11-23 03:52:00,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266159445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:00,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:00,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:52:00,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344310458] [2021-11-23 03:52:00,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:00,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:52:00,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:00,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:52:00,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:52:00,415 INFO L87 Difference]: Start difference. First operand 162 states and 176 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-11-23 03:52:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:01,077 INFO L93 Difference]: Finished difference Result 307 states and 339 transitions. [2021-11-23 03:52:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:52:01,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2021-11-23 03:52:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:01,081 INFO L225 Difference]: With dead ends: 307 [2021-11-23 03:52:01,082 INFO L226 Difference]: Without dead ends: 307 [2021-11-23 03:52:01,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:52:01,083 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 316 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:01,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 629 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:52:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-23 03:52:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 166. [2021-11-23 03:52:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 82 states have (on average 2.2195121951219514) internal successors, (182), 165 states have internal predecessors, (182), 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) [2021-11-23 03:52:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 182 transitions. [2021-11-23 03:52:01,105 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 182 transitions. Word has length 11 [2021-11-23 03:52:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:01,106 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 182 transitions. [2021-11-23 03:52:01,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-11-23 03:52:01,107 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 182 transitions. [2021-11-23 03:52:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:52:01,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:01,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:01,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:52:01,109 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:01,110 INFO L85 PathProgramCache]: Analyzing trace with hash 446710761, now seen corresponding path program 1 times [2021-11-23 03:52:01,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:01,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538508530] [2021-11-23 03:52:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:01,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:01,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:01,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538508530] [2021-11-23 03:52:01,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538508530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:01,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:01,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:52:01,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554465254] [2021-11-23 03:52:01,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:01,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:52:01,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:52:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:52:01,452 INFO L87 Difference]: Start difference. First operand 166 states and 182 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-11-23 03:52:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:02,207 INFO L93 Difference]: Finished difference Result 234 states and 260 transitions. [2021-11-23 03:52:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:52:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 [2021-11-23 03:52:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:02,209 INFO L225 Difference]: With dead ends: 234 [2021-11-23 03:52:02,209 INFO L226 Difference]: Without dead ends: 234 [2021-11-23 03:52:02,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:52:02,211 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 400 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:02,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 390 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:52:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-23 03:52:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2021-11-23 03:52:02,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 82 states have (on average 2.207317073170732) internal successors, (181), 165 states have internal predecessors, (181), 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) [2021-11-23 03:52:02,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2021-11-23 03:52:02,217 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 11 [2021-11-23 03:52:02,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:02,218 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2021-11-23 03:52:02,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-11-23 03:52:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2021-11-23 03:52:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:52:02,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:02,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:02,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:52:02,219 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:02,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:02,220 INFO L85 PathProgramCache]: Analyzing trace with hash 963131682, now seen corresponding path program 1 times [2021-11-23 03:52:02,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:02,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725678648] [2021-11-23 03:52:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:02,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:02,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:02,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725678648] [2021-11-23 03:52:02,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725678648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:02,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:02,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:52:02,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326473934] [2021-11-23 03:52:02,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:02,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:02,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:02,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:02,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:02,257 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-23 03:52:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:02,462 INFO L93 Difference]: Finished difference Result 273 states and 301 transitions. [2021-11-23 03:52:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:02,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 03:52:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:02,464 INFO L225 Difference]: With dead ends: 273 [2021-11-23 03:52:02,464 INFO L226 Difference]: Without dead ends: 273 [2021-11-23 03:52:02,465 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 [2021-11-23 03:52:02,465 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 144 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:02,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 262 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:52:02,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-23 03:52:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 163. [2021-11-23 03:52:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 82 states have (on average 2.1707317073170733) internal successors, (178), 162 states have internal predecessors, (178), 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) [2021-11-23 03:52:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 178 transitions. [2021-11-23 03:52:02,471 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 178 transitions. Word has length 12 [2021-11-23 03:52:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:02,472 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 178 transitions. [2021-11-23 03:52:02,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-23 03:52:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 178 transitions. [2021-11-23 03:52:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:52:02,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:02,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:02,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:52:02,475 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:02,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 963131683, now seen corresponding path program 1 times [2021-11-23 03:52:02,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:02,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396806831] [2021-11-23 03:52:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:02,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:02,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:02,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396806831] [2021-11-23 03:52:02,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396806831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:02,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:02,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:52:02,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88932892] [2021-11-23 03:52:02,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:02,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:02,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:02,555 INFO L87 Difference]: Start difference. First operand 163 states and 178 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-23 03:52:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:02,764 INFO L93 Difference]: Finished difference Result 253 states and 281 transitions. [2021-11-23 03:52:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:02,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 03:52:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:02,767 INFO L225 Difference]: With dead ends: 253 [2021-11-23 03:52:02,767 INFO L226 Difference]: Without dead ends: 253 [2021-11-23 03:52:02,768 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 [2021-11-23 03:52:02,768 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 119 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:02,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 273 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:52:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-23 03:52:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 161. [2021-11-23 03:52:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 82 states have (on average 2.1463414634146343) internal successors, (176), 160 states have internal predecessors, (176), 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) [2021-11-23 03:52:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2021-11-23 03:52:02,786 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 12 [2021-11-23 03:52:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:02,786 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2021-11-23 03:52:02,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-23 03:52:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2021-11-23 03:52:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:52:02,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:02,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:02,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:52:02,788 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash -208860631, now seen corresponding path program 1 times [2021-11-23 03:52:02,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:02,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14647128] [2021-11-23 03:52:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:02,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:02,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:02,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14647128] [2021-11-23 03:52:02,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14647128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:02,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:02,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:02,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900947434] [2021-11-23 03:52:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:02,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:52:02,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:02,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:52:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:52:02,835 INFO L87 Difference]: Start difference. First operand 161 states and 176 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-11-23 03:52:03,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:03,075 INFO L93 Difference]: Finished difference Result 220 states and 242 transitions. [2021-11-23 03:52:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:52:03,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 [2021-11-23 03:52:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:03,077 INFO L225 Difference]: With dead ends: 220 [2021-11-23 03:52:03,077 INFO L226 Difference]: Without dead ends: 220 [2021-11-23 03:52:03,077 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 [2021-11-23 03:52:03,078 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 272 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:03,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 111 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:52:03,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-23 03:52:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 150. [2021-11-23 03:52:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 86 states have (on average 1.9651162790697674) internal successors, (169), 149 states have internal predecessors, (169), 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) [2021-11-23 03:52:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 169 transitions. [2021-11-23 03:52:03,084 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 169 transitions. Word has length 13 [2021-11-23 03:52:03,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:03,084 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 169 transitions. [2021-11-23 03:52:03,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-11-23 03:52:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 169 transitions. [2021-11-23 03:52:03,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:52:03,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:03,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:03,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:52:03,085 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash -208860630, now seen corresponding path program 1 times [2021-11-23 03:52:03,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:03,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475481938] [2021-11-23 03:52:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:03,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:03,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475481938] [2021-11-23 03:52:03,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475481938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:03,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:03,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:03,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476245102] [2021-11-23 03:52:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:03,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:52:03,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:52:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:52:03,189 INFO L87 Difference]: Start difference. First operand 150 states and 169 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-23 03:52:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:03,630 INFO L93 Difference]: Finished difference Result 377 states and 425 transitions. [2021-11-23 03:52:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:52:03,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 [2021-11-23 03:52:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:03,634 INFO L225 Difference]: With dead ends: 377 [2021-11-23 03:52:03,634 INFO L226 Difference]: Without dead ends: 377 [2021-11-23 03:52:03,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:52:03,635 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 585 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:03,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 218 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:52:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-23 03:52:03,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 266. [2021-11-23 03:52:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 202 states have (on average 1.9257425742574257) internal successors, (389), 265 states have internal predecessors, (389), 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) [2021-11-23 03:52:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 389 transitions. [2021-11-23 03:52:03,645 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 389 transitions. Word has length 13 [2021-11-23 03:52:03,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:03,646 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 389 transitions. [2021-11-23 03:52:03,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-23 03:52:03,646 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 389 transitions. [2021-11-23 03:52:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:52:03,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:03,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:03,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:52:03,647 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:03,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:03,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2143096939, now seen corresponding path program 1 times [2021-11-23 03:52:03,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:03,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355761156] [2021-11-23 03:52:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:03,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:03,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355761156] [2021-11-23 03:52:03,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355761156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:03,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:03,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:52:03,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228973181] [2021-11-23 03:52:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:03,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:52:03,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:52:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:52:03,737 INFO L87 Difference]: Start difference. First operand 266 states and 389 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:04,332 INFO L93 Difference]: Finished difference Result 662 states and 992 transitions. [2021-11-23 03:52:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:52:04,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 03:52:04,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:04,338 INFO L225 Difference]: With dead ends: 662 [2021-11-23 03:52:04,338 INFO L226 Difference]: Without dead ends: 662 [2021-11-23 03:52:04,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:52:04,340 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 314 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:04,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 722 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:52:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-23 03:52:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 265. [2021-11-23 03:52:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 202 states have (on average 1.9207920792079207) internal successors, (388), 264 states have internal predecessors, (388), 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) [2021-11-23 03:52:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 388 transitions. [2021-11-23 03:52:04,361 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 388 transitions. Word has length 14 [2021-11-23 03:52:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:04,362 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 388 transitions. [2021-11-23 03:52:04,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 388 transitions. [2021-11-23 03:52:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:52:04,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:04,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:04,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:52:04,365 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:04,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2143096938, now seen corresponding path program 1 times [2021-11-23 03:52:04,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:04,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276214658] [2021-11-23 03:52:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:04,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:04,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:04,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276214658] [2021-11-23 03:52:04,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276214658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:04,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:04,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:52:04,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399208657] [2021-11-23 03:52:04,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:04,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:52:04,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:52:04,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:52:04,540 INFO L87 Difference]: Start difference. First operand 265 states and 388 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:05,271 INFO L93 Difference]: Finished difference Result 661 states and 991 transitions. [2021-11-23 03:52:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:52:05,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 03:52:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:05,276 INFO L225 Difference]: With dead ends: 661 [2021-11-23 03:52:05,277 INFO L226 Difference]: Without dead ends: 661 [2021-11-23 03:52:05,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:52:05,278 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 310 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:05,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 606 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:52:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-11-23 03:52:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 264. [2021-11-23 03:52:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 202 states have (on average 1.9158415841584158) internal successors, (387), 263 states have internal predecessors, (387), 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) [2021-11-23 03:52:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 387 transitions. [2021-11-23 03:52:05,292 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 387 transitions. Word has length 14 [2021-11-23 03:52:05,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:05,292 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 387 transitions. [2021-11-23 03:52:05,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 387 transitions. [2021-11-23 03:52:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:52:05,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:05,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:05,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:52:05,294 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:05,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2115262429, now seen corresponding path program 1 times [2021-11-23 03:52:05,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:05,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770432096] [2021-11-23 03:52:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:05,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:05,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:05,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770432096] [2021-11-23 03:52:05,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770432096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:05,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:05,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:52:05,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299959476] [2021-11-23 03:52:05,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:05,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:05,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:05,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:05,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:05,328 INFO L87 Difference]: Start difference. First operand 264 states and 387 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:05,395 INFO L93 Difference]: Finished difference Result 332 states and 459 transitions. [2021-11-23 03:52:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:05,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 03:52:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:05,399 INFO L225 Difference]: With dead ends: 332 [2021-11-23 03:52:05,399 INFO L226 Difference]: Without dead ends: 332 [2021-11-23 03:52:05,400 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 [2021-11-23 03:52:05,401 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 139 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:05,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 227 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:52:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-23 03:52:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 298. [2021-11-23 03:52:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 236 states have (on average 1.944915254237288) internal successors, (459), 297 states have internal predecessors, (459), 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) [2021-11-23 03:52:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 459 transitions. [2021-11-23 03:52:05,412 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 459 transitions. Word has length 14 [2021-11-23 03:52:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:05,413 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 459 transitions. [2021-11-23 03:52:05,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 459 transitions. [2021-11-23 03:52:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:52:05,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:05,415 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:05,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:52:05,415 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:05,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash -819690949, now seen corresponding path program 1 times [2021-11-23 03:52:05,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:05,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504894919] [2021-11-23 03:52:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:05,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:05,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504894919] [2021-11-23 03:52:05,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504894919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:52:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72502694] [2021-11-23 03:52:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:05,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:52:05,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:52:05,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:52:05,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:52:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:05,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 03:52:05,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:52:05,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:52:05,792 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:52:05,793 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 [2021-11-23 03:52:05,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-23 03:52:05,899 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-23 03:52:05,900 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 34 treesize of output 24 [2021-11-23 03:52:05,929 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:52:05,929 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 [2021-11-23 03:52:06,023 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 [2021-11-23 03:52:06,118 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-23 03:52:06,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-11-23 03:52:06,235 INFO L354 Elim1Store]: treesize reduction 36, result has 37.9 percent of original size [2021-11-23 03:52:06,235 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 23 treesize of output 33 [2021-11-23 03:52:06,350 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:52:06,351 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 29 [2021-11-23 03:52:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:06,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:52:06,500 INFO L354 Elim1Store]: treesize reduction 32, result has 39.6 percent of original size [2021-11-23 03:52:06,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 68 treesize of output 68 [2021-11-23 03:52:07,082 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem11#1.offset| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base|) |ULTIMATE.start_main_#t~mem11#1.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base|)) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem11#1.base|)) is different from false [2021-11-23 03:52:07,562 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem11#1.offset| Int)) (let ((.cse1 (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_main_#t~mem11#1.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base|)) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse1) .cse0)))) is different from false [2021-11-23 03:52:15,037 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:52:15,038 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 1228 treesize of output 1224 [2021-11-23 03:52:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:36,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72502694] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:52:36,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [501962844] [2021-11-23 03:52:37,014 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 03:52:37,014 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:52:37,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:52:37,027 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:52:37,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:52:37,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 03:52:37,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-23 03:52:37,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,115 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 30 treesize of output 21 [2021-11-23 03:52:37,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-23 03:52:37,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:52:37,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,155 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 29 treesize of output 35 [2021-11-23 03:52:37,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-23 03:52:37,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,178 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 21 treesize of output 20 [2021-11-23 03:52:37,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,209 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 30 treesize of output 32 [2021-11-23 03:52:37,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,220 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 [2021-11-23 03:52:37,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,246 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 59 treesize of output 61 [2021-11-23 03:52:37,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,352 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:52:37,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 184 [2021-11-23 03:52:37,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,393 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:52:37,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 216 [2021-11-23 03:52:37,425 INFO L354 Elim1Store]: treesize reduction 152, result has 9.0 percent of original size [2021-11-23 03:52:37,426 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 267 treesize of output 220 [2021-11-23 03:52:37,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,516 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 137 treesize of output 138 [2021-11-23 03:52:37,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,697 INFO L354 Elim1Store]: treesize reduction 178, result has 10.6 percent of original size [2021-11-23 03:52:37,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 296 treesize of output 217 [2021-11-23 03:52:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,760 INFO L354 Elim1Store]: treesize reduction 208, result has 11.5 percent of original size [2021-11-23 03:52:37,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 292 treesize of output 252 [2021-11-23 03:52:37,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,783 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 30 treesize of output 21 [2021-11-23 03:52:37,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,884 INFO L354 Elim1Store]: treesize reduction 232, result has 12.5 percent of original size [2021-11-23 03:52:37,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 381 treesize of output 252 [2021-11-23 03:52:37,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:37,971 INFO L354 Elim1Store]: treesize reduction 232, result has 12.5 percent of original size [2021-11-23 03:52:37,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 336 treesize of output 273 [2021-11-23 03:52:38,016 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-23 03:52:38,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 242 treesize of output 215 [2021-11-23 03:52:38,355 INFO L354 Elim1Store]: treesize reduction 180, result has 16.7 percent of original size [2021-11-23 03:52:38,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 601 treesize of output 591 [2021-11-23 03:52:38,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:52:38,974 INFO L354 Elim1Store]: treesize reduction 340, result has 6.8 percent of original size [2021-11-23 03:52:38,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 22 case distinctions, treesize of input 871 treesize of output 570 [2021-11-23 03:52:38,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:38,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:52:39,124 INFO L354 Elim1Store]: treesize reduction 280, result has 8.2 percent of original size [2021-11-23 03:52:39,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 570 treesize of output 527 [2021-11-23 03:52:39,162 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 03:52:39,163 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 1 case distinctions, treesize of input 527 treesize of output 510 [2021-11-23 03:52:39,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:52:39,586 INFO L354 Elim1Store]: treesize reduction 377, result has 17.0 percent of original size [2021-11-23 03:52:39,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 22 case distinctions, treesize of input 969 treesize of output 655 [2021-11-23 03:52:39,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:39,739 INFO L354 Elim1Store]: treesize reduction 328, result has 14.4 percent of original size [2021-11-23 03:52:39,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 655 treesize of output 559 [2021-11-23 03:52:39,796 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-23 03:52:39,796 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 559 treesize of output 542 [2021-11-23 03:52:40,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-23 03:52:40,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:52:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:40,374 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:52:40,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-11-23 03:52:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:40,397 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:52:40,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 77 [2021-11-23 03:52:40,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:52:40,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:40,507 INFO L354 Elim1Store]: treesize reduction 76, result has 42.9 percent of original size [2021-11-23 03:52:40,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 189 treesize of output 164 [2021-11-23 03:52:40,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:40,567 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-11-23 03:52:40,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 158 treesize of output 139 [2021-11-23 03:52:40,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 118 [2021-11-23 03:52:40,641 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 [2021-11-23 03:52:40,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:52:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:40,696 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:52:40,697 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-11-23 03:52:40,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:52:40,723 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:52:40,724 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 77 [2021-11-23 03:52:40,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:52:40,752 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:52:54,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7668#(and (= |ULTIMATE.start_main_#t~mem9#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |ULTIMATE.start_main_~tree~0#1.offset|))) (<= 0 |#NULL.base|) (= 1 (select |#valid| |ULTIMATE.start_main_~tmpList~0#1.base|)) (<= 0 |ULTIMATE.start_main_~tree~0#1.offset|) (= (select |#valid| |ULTIMATE.start_main_~tree~0#1.base|) 1) (= (select |#length| |ULTIMATE.start_main_~tmpList~0#1.base|) 4) (<= (+ 12 |ULTIMATE.start_main_~tree~0#1.offset|) (select |#length| |ULTIMATE.start_main_~tree~0#1.base|)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem9#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |ULTIMATE.start_main_~tree~0#1.offset|))) (not (= 0 |ULTIMATE.start_main_~tmpList~0#1.base|)) (<= |#NULL.base| 0) (< |ULTIMATE.start_main_~tmpList~0#1.base| |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~tree~0#1.offset| 0) (<= 0 |#NULL.offset|) (= |ULTIMATE.start_main_~tmpList~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (not (= (select |#valid| |ULTIMATE.start_main_#t~mem9#1.base|) 1)))' at error location [2021-11-23 03:52:54,172 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:52:54,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:52:54,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 26 [2021-11-23 03:52:54,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092204700] [2021-11-23 03:52:54,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:52:54,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-23 03:52:54,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-23 03:52:54,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1247, Unknown=12, NotChecked=150, Total=1640 [2021-11-23 03:52:54,179 INFO L87 Difference]: Start difference. First operand 298 states and 459 transitions. Second operand has 27 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 27 states have internal predecessors, (53), 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) [2021-11-23 03:52:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:59,459 INFO L93 Difference]: Finished difference Result 611 states and 902 transitions. [2021-11-23 03:52:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:52:59,459 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 27 states have internal predecessors, (53), 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 [2021-11-23 03:52:59,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:59,464 INFO L225 Difference]: With dead ends: 611 [2021-11-23 03:52:59,464 INFO L226 Difference]: Without dead ends: 611 [2021-11-23 03:52:59,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=339, Invalid=1725, Unknown=14, NotChecked=178, Total=2256 [2021-11-23 03:52:59,466 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 869 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1116 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:59,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1955 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1412 Invalid, 0 Unknown, 1116 Unchecked, 1.0s Time] [2021-11-23 03:52:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-11-23 03:52:59,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 297. [2021-11-23 03:52:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 236 states have (on average 1.9406779661016949) internal successors, (458), 296 states have internal predecessors, (458), 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) [2021-11-23 03:52:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 458 transitions. [2021-11-23 03:52:59,479 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 458 transitions. Word has length 18 [2021-11-23 03:52:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:59,480 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 458 transitions. [2021-11-23 03:52:59,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 27 states have internal predecessors, (53), 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) [2021-11-23 03:52:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 458 transitions. [2021-11-23 03:52:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:52:59,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:59,482 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:59,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:52:59,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 03:52:59,707 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:52:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:59,708 INFO L85 PathProgramCache]: Analyzing trace with hash -819690948, now seen corresponding path program 1 times [2021-11-23 03:52:59,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:59,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736296580] [2021-11-23 03:52:59,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:59,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:00,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:00,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736296580] [2021-11-23 03:53:00,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736296580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:53:00,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143520878] [2021-11-23 03:53:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:00,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:53:00,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:53:00,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:53:00,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:53:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:00,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 03:53:00,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:53:00,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:53:00,288 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 03:53:00,288 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 [2021-11-23 03:53:00,330 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 23 treesize of output 19 [2021-11-23 03:53:00,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 03:53:00,435 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-23 03:53:00,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-11-23 03:53:00,449 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 03:53:00,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2021-11-23 03:53:00,495 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-23 03:53:00,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-11-23 03:53:00,631 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 43 treesize of output 30 [2021-11-23 03:53:00,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:53:00,746 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-23 03:53:00,746 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 113 treesize of output 73 [2021-11-23 03:53:00,762 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 03:53:00,762 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 110 treesize of output 97 [2021-11-23 03:53:00,883 INFO L354 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2021-11-23 03:53:00,884 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 79 treesize of output 81 [2021-11-23 03:53:00,894 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-23 03:53:00,895 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 78 treesize of output 78 [2021-11-23 03:53:00,980 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:53:00,981 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 62 [2021-11-23 03:53:00,986 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 45 treesize of output 27 [2021-11-23 03:53:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:01,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:53:01,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:53:01,211 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 122 treesize of output 126 [2021-11-23 03:53:10,683 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 03:53:10,684 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 415 treesize of output 414 [2021-11-23 03:54:30,693 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:54:30,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1270781490] [2021-11-23 03:54:30,695 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 03:54:30,696 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:54:30,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:54:30,696 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:54:30,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:54:30,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 03:54:30,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,730 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 30 treesize of output 21 [2021-11-23 03:54:30,738 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 11 treesize of output 7 [2021-11-23 03:54:30,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-23 03:54:30,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:54:30,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,770 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 [2021-11-23 03:54:30,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,786 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 29 treesize of output 35 [2021-11-23 03:54:30,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:54:30,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,819 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 [2021-11-23 03:54:30,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,830 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 59 treesize of output 61 [2021-11-23 03:54:30,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,849 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 30 treesize of output 32 [2021-11-23 03:54:30,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,923 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:54:30,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 184 [2021-11-23 03:54:30,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:30,970 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:54:30,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 216 [2021-11-23 03:54:31,000 INFO L354 Elim1Store]: treesize reduction 128, result has 10.5 percent of original size [2021-11-23 03:54:31,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 240 treesize of output 201 [2021-11-23 03:54:31,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,064 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 59 treesize of output 60 [2021-11-23 03:54:31,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,122 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 30 treesize of output 21 [2021-11-23 03:54:31,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,154 INFO L354 Elim1Store]: treesize reduction 101, result has 11.4 percent of original size [2021-11-23 03:54:31,154 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 5 new quantified variables, introduced 4 case distinctions, treesize of input 272 treesize of output 195 [2021-11-23 03:54:31,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,179 INFO L354 Elim1Store]: treesize reduction 101, result has 11.4 percent of original size [2021-11-23 03:54:31,179 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 5 new quantified variables, introduced 4 case distinctions, treesize of input 268 treesize of output 233 [2021-11-23 03:54:31,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,269 INFO L354 Elim1Store]: treesize reduction 232, result has 12.5 percent of original size [2021-11-23 03:54:31,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 371 treesize of output 248 [2021-11-23 03:54:31,298 INFO L354 Elim1Store]: treesize reduction 128, result has 10.5 percent of original size [2021-11-23 03:54:31,298 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 326 treesize of output 287 [2021-11-23 03:54:31,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,365 INFO L354 Elim1Store]: treesize reduction 232, result has 12.5 percent of original size [2021-11-23 03:54:31,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 281 treesize of output 240 [2021-11-23 03:54:31,589 INFO L354 Elim1Store]: treesize reduction 180, result has 16.7 percent of original size [2021-11-23 03:54:31,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 582 treesize of output 572 [2021-11-23 03:54:31,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:54:31,906 INFO L354 Elim1Store]: treesize reduction 236, result has 9.2 percent of original size [2021-11-23 03:54:31,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 820 treesize of output 545 [2021-11-23 03:54:31,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:31,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:54:31,991 INFO L354 Elim1Store]: treesize reduction 266, result has 8.3 percent of original size [2021-11-23 03:54:31,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 882 treesize of output 741 [2021-11-23 03:54:32,016 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 03:54:32,016 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 1 case distinctions, treesize of input 842 treesize of output 825 [2021-11-23 03:54:32,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,236 INFO L354 Elim1Store]: treesize reduction 358, result has 13.5 percent of original size [2021-11-23 03:54:32,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 930 treesize of output 567 [2021-11-23 03:54:32,279 INFO L354 Elim1Store]: treesize reduction 128, result has 10.5 percent of original size [2021-11-23 03:54:32,280 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 792 treesize of output 745 [2021-11-23 03:54:32,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:54:32,391 INFO L354 Elim1Store]: treesize reduction 357, result has 11.0 percent of original size [2021-11-23 03:54:32,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 747 treesize of output 686 [2021-11-23 03:54:32,466 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 [2021-11-23 03:54:32,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:54:32,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:54:32,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,516 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:54:32,516 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-11-23 03:54:32,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,539 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:54:32,540 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 77 [2021-11-23 03:54:32,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,628 INFO L354 Elim1Store]: treesize reduction 76, result has 42.9 percent of original size [2021-11-23 03:54:32,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 189 treesize of output 164 [2021-11-23 03:54:32,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,695 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-11-23 03:54:32,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 158 treesize of output 139 [2021-11-23 03:54:32,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 118 [2021-11-23 03:54:32,771 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 [2021-11-23 03:54:32,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:54:32,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:54:32,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,823 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:54:32,823 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-11-23 03:54:32,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:32,846 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:54:32,846 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 77 [2021-11-23 03:54:32,862 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:54:35,242 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8739#(and (= |ULTIMATE.start_main_#t~mem9#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |ULTIMATE.start_main_~tree~0#1.offset|))) (= |ULTIMATE.start_main_~tree~0#1.offset| 0) (= 1 (select |#valid| |ULTIMATE.start_main_~tmpList~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~tree~0#1.base|) 1) (= (select |#length| |ULTIMATE.start_main_~tmpList~0#1.base|) 4) (<= (+ 12 |ULTIMATE.start_main_~tree~0#1.offset|) (select |#length| |ULTIMATE.start_main_~tree~0#1.base|)) (or (< (select |#length| |ULTIMATE.start_main_#t~mem9#1.base|) (+ |ULTIMATE.start_main_#t~mem9#1.offset| 4)) (< |ULTIMATE.start_main_#t~mem9#1.offset| 0)) (= |ULTIMATE.start_main_#t~mem9#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |ULTIMATE.start_main_~tree~0#1.offset|))) (not (= 0 |ULTIMATE.start_main_~tmpList~0#1.base|)) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~tmpList~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_main_~tmpList~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:54:35,242 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:54:35,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:54:35,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-23 03:54:35,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843645090] [2021-11-23 03:54:35,242 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:54:35,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:54:35,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:54:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1990, Unknown=32, NotChecked=0, Total=2256 [2021-11-23 03:54:35,244 INFO L87 Difference]: Start difference. First operand 297 states and 458 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2021-11-23 03:54:36,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:36,795 INFO L93 Difference]: Finished difference Result 455 states and 670 transitions. [2021-11-23 03:54:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:54:36,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 [2021-11-23 03:54:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:36,800 INFO L225 Difference]: With dead ends: 455 [2021-11-23 03:54:36,800 INFO L226 Difference]: Without dead ends: 455 [2021-11-23 03:54:36,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 84.1s TimeCoverageRelationStatistics Valid=361, Invalid=2799, Unknown=32, NotChecked=0, Total=3192 [2021-11-23 03:54:36,802 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 325 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:36,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 695 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:54:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-23 03:54:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 292. [2021-11-23 03:54:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 232 states have (on average 1.9482758620689655) internal successors, (452), 291 states have internal predecessors, (452), 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) [2021-11-23 03:54:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 452 transitions. [2021-11-23 03:54:36,811 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 452 transitions. Word has length 18 [2021-11-23 03:54:36,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:36,812 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 452 transitions. [2021-11-23 03:54:36,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2021-11-23 03:54:36,812 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 452 transitions. [2021-11-23 03:54:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:54:36,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:36,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:36,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:54:37,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-23 03:54:37,029 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash 553140911, now seen corresponding path program 1 times [2021-11-23 03:54:37,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:37,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062978770] [2021-11-23 03:54:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:37,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:37,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:37,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062978770] [2021-11-23 03:54:37,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062978770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:37,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:37,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:54:37,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93471007] [2021-11-23 03:54:37,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:37,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:54:37,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:37,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:54:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:37,079 INFO L87 Difference]: Start difference. First operand 292 states and 452 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-11-23 03:54:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:37,148 INFO L93 Difference]: Finished difference Result 296 states and 456 transitions. [2021-11-23 03:54:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:54:37,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 [2021-11-23 03:54:37,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:37,151 INFO L225 Difference]: With dead ends: 296 [2021-11-23 03:54:37,151 INFO L226 Difference]: Without dead ends: 296 [2021-11-23 03:54:37,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:37,152 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:37,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:54:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-23 03:54:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-11-23 03:54:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 236 states have (on average 1.9322033898305084) internal successors, (456), 295 states have internal predecessors, (456), 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) [2021-11-23 03:54:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 456 transitions. [2021-11-23 03:54:37,160 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 456 transitions. Word has length 18 [2021-11-23 03:54:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:37,160 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 456 transitions. [2021-11-23 03:54:37,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-11-23 03:54:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 456 transitions. [2021-11-23 03:54:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:54:37,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:37,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:37,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 03:54:37,176 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:37,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1939428640, now seen corresponding path program 1 times [2021-11-23 03:54:37,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:37,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896058489] [2021-11-23 03:54:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:37,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:37,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:37,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896058489] [2021-11-23 03:54:37,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896058489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:37,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:37,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:54:37,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431008680] [2021-11-23 03:54:37,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:37,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:54:37,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:54:37,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:37,202 INFO L87 Difference]: Start difference. First operand 296 states and 456 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-11-23 03:54:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:37,246 INFO L93 Difference]: Finished difference Result 299 states and 459 transitions. [2021-11-23 03:54:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:54:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 [2021-11-23 03:54:37,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:37,253 INFO L225 Difference]: With dead ends: 299 [2021-11-23 03:54:37,254 INFO L226 Difference]: Without dead ends: 299 [2021-11-23 03:54:37,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:37,255 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:37,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:54:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-23 03:54:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-11-23 03:54:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 239 states have (on average 1.9205020920502092) internal successors, (459), 298 states have internal predecessors, (459), 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) [2021-11-23 03:54:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 459 transitions. [2021-11-23 03:54:37,263 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 459 transitions. Word has length 18 [2021-11-23 03:54:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:37,263 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 459 transitions. [2021-11-23 03:54:37,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-11-23 03:54:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 459 transitions. [2021-11-23 03:54:37,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:54:37,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:37,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:37,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 03:54:37,265 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:37,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:37,266 INFO L85 PathProgramCache]: Analyzing trace with hash -26953863, now seen corresponding path program 1 times [2021-11-23 03:54:37,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:37,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863230603] [2021-11-23 03:54:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:37,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:37,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:37,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863230603] [2021-11-23 03:54:37,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863230603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:37,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:37,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:54:37,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462559181] [2021-11-23 03:54:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:37,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:54:37,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:54:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:37,295 INFO L87 Difference]: Start difference. First operand 299 states and 459 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-23 03:54:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:37,370 INFO L93 Difference]: Finished difference Result 337 states and 483 transitions. [2021-11-23 03:54:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:54:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 19 [2021-11-23 03:54:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:37,373 INFO L225 Difference]: With dead ends: 337 [2021-11-23 03:54:37,373 INFO L226 Difference]: Without dead ends: 337 [2021-11-23 03:54:37,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:37,374 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 49 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:37,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 246 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:54:37,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-23 03:54:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 286. [2021-11-23 03:54:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 226 states have (on average 1.915929203539823) internal successors, (433), 285 states have internal predecessors, (433), 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) [2021-11-23 03:54:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 433 transitions. [2021-11-23 03:54:37,381 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 433 transitions. Word has length 19 [2021-11-23 03:54:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 433 transitions. [2021-11-23 03:54:37,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-23 03:54:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 433 transitions. [2021-11-23 03:54:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:54:37,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:37,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:37,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 03:54:37,383 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash 50602614, now seen corresponding path program 1 times [2021-11-23 03:54:37,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:37,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845796812] [2021-11-23 03:54:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:37,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:37,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:37,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845796812] [2021-11-23 03:54:37,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845796812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:37,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:37,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:54:37,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049827608] [2021-11-23 03:54:37,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:37,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:54:37,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:54:37,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:54:37,533 INFO L87 Difference]: Start difference. First operand 286 states and 433 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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) [2021-11-23 03:54:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:38,173 INFO L93 Difference]: Finished difference Result 487 states and 658 transitions. [2021-11-23 03:54:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:54:38,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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 19 [2021-11-23 03:54:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:38,176 INFO L225 Difference]: With dead ends: 487 [2021-11-23 03:54:38,176 INFO L226 Difference]: Without dead ends: 487 [2021-11-23 03:54:38,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:54:38,177 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 277 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:38,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 660 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:54:38,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-11-23 03:54:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 299. [2021-11-23 03:54:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 239 states have (on average 1.8828451882845187) internal successors, (450), 298 states have internal predecessors, (450), 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) [2021-11-23 03:54:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 450 transitions. [2021-11-23 03:54:38,187 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 450 transitions. Word has length 19 [2021-11-23 03:54:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:38,187 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 450 transitions. [2021-11-23 03:54:38,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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) [2021-11-23 03:54:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 450 transitions. [2021-11-23 03:54:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:54:38,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:38,188 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] [2021-11-23 03:54:38,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 03:54:38,189 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:38,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1006344639, now seen corresponding path program 1 times [2021-11-23 03:54:38,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:38,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020021540] [2021-11-23 03:54:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:38,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:38,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:38,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020021540] [2021-11-23 03:54:38,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020021540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:38,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:38,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:54:38,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223182544] [2021-11-23 03:54:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:38,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:54:38,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:54:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:54:38,318 INFO L87 Difference]: Start difference. First operand 299 states and 450 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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) [2021-11-23 03:54:38,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:38,913 INFO L93 Difference]: Finished difference Result 485 states and 654 transitions. [2021-11-23 03:54:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 03:54:38,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 [2021-11-23 03:54:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:38,916 INFO L225 Difference]: With dead ends: 485 [2021-11-23 03:54:38,916 INFO L226 Difference]: Without dead ends: 485 [2021-11-23 03:54:38,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:54:38,917 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 297 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:38,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 768 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:54:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-11-23 03:54:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 335. [2021-11-23 03:54:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 275 states have (on average 1.8836363636363636) internal successors, (518), 334 states have internal predecessors, (518), 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) [2021-11-23 03:54:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 518 transitions. [2021-11-23 03:54:38,926 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 518 transitions. Word has length 20 [2021-11-23 03:54:38,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:38,927 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 518 transitions. [2021-11-23 03:54:38,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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) [2021-11-23 03:54:38,927 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 518 transitions. [2021-11-23 03:54:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:54:38,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:38,928 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] [2021-11-23 03:54:38,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 03:54:38,928 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:38,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash -267643194, now seen corresponding path program 1 times [2021-11-23 03:54:38,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:38,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876515883] [2021-11-23 03:54:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:38,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:38,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:38,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876515883] [2021-11-23 03:54:38,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876515883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:38,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:38,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:54:38,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111411331] [2021-11-23 03:54:38,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:38,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:54:38,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:38,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:54:38,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:38,955 INFO L87 Difference]: Start difference. First operand 335 states and 518 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2021-11-23 03:54:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:39,105 INFO L93 Difference]: Finished difference Result 507 states and 789 transitions. [2021-11-23 03:54:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:54:39,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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 [2021-11-23 03:54:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:39,111 INFO L225 Difference]: With dead ends: 507 [2021-11-23 03:54:39,111 INFO L226 Difference]: Without dead ends: 507 [2021-11-23 03:54:39,112 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 [2021-11-23 03:54:39,112 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 109 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:39,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 221 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:54:39,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-23 03:54:39,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 330. [2021-11-23 03:54:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 275 states have (on average 1.8654545454545455) internal successors, (513), 329 states have internal predecessors, (513), 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) [2021-11-23 03:54:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 513 transitions. [2021-11-23 03:54:39,122 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 513 transitions. Word has length 20 [2021-11-23 03:54:39,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:39,122 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 513 transitions. [2021-11-23 03:54:39,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2021-11-23 03:54:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 513 transitions. [2021-11-23 03:54:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:54:39,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:39,123 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] [2021-11-23 03:54:39,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 03:54:39,124 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash -267643193, now seen corresponding path program 1 times [2021-11-23 03:54:39,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:39,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897601446] [2021-11-23 03:54:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:39,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:39,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:39,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897601446] [2021-11-23 03:54:39,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897601446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:39,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:39,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:54:39,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927838355] [2021-11-23 03:54:39,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:39,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:54:39,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:54:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:39,156 INFO L87 Difference]: Start difference. First operand 330 states and 513 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2021-11-23 03:54:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:39,340 INFO L93 Difference]: Finished difference Result 459 states and 706 transitions. [2021-11-23 03:54:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:54:39,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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 [2021-11-23 03:54:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:39,343 INFO L225 Difference]: With dead ends: 459 [2021-11-23 03:54:39,343 INFO L226 Difference]: Without dead ends: 459 [2021-11-23 03:54:39,343 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 [2021-11-23 03:54:39,344 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 106 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:39,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 220 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:54:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-23 03:54:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 325. [2021-11-23 03:54:39,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 275 states have (on average 1.8472727272727272) internal successors, (508), 324 states have internal predecessors, (508), 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) [2021-11-23 03:54:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 508 transitions. [2021-11-23 03:54:39,352 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 508 transitions. Word has length 20 [2021-11-23 03:54:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:39,353 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 508 transitions. [2021-11-23 03:54:39,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2021-11-23 03:54:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 508 transitions. [2021-11-23 03:54:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:54:39,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:39,354 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, 1] [2021-11-23 03:54:39,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 03:54:39,354 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:39,355 INFO L85 PathProgramCache]: Analyzing trace with hash -131673973, now seen corresponding path program 1 times [2021-11-23 03:54:39,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:39,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069518123] [2021-11-23 03:54:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:39,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:39,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:39,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069518123] [2021-11-23 03:54:39,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069518123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:39,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:39,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:54:39,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5867126] [2021-11-23 03:54:39,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:39,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:54:39,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:54:39,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:54:39,417 INFO L87 Difference]: Start difference. First operand 325 states and 508 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:39,618 INFO L93 Difference]: Finished difference Result 423 states and 661 transitions. [2021-11-23 03:54:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:54:39,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 03:54:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:39,621 INFO L225 Difference]: With dead ends: 423 [2021-11-23 03:54:39,621 INFO L226 Difference]: Without dead ends: 423 [2021-11-23 03:54:39,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:54:39,622 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 110 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:39,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 229 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:54:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-11-23 03:54:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 334. [2021-11-23 03:54:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 284 states have (on average 1.8309859154929577) internal successors, (520), 333 states have internal predecessors, (520), 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) [2021-11-23 03:54:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 520 transitions. [2021-11-23 03:54:39,631 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 520 transitions. Word has length 21 [2021-11-23 03:54:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:39,632 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 520 transitions. [2021-11-23 03:54:39,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 520 transitions. [2021-11-23 03:54:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:54:39,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:39,633 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, 1] [2021-11-23 03:54:39,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 03:54:39,633 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash -131668641, now seen corresponding path program 1 times [2021-11-23 03:54:39,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:39,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465473024] [2021-11-23 03:54:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:39,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:39,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:39,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465473024] [2021-11-23 03:54:39,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465473024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:39,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:39,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:54:39,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469688457] [2021-11-23 03:54:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:39,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:54:39,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:54:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:54:39,844 INFO L87 Difference]: Start difference. First operand 334 states and 520 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:40,453 INFO L93 Difference]: Finished difference Result 455 states and 661 transitions. [2021-11-23 03:54:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:54:40,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 03:54:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:40,456 INFO L225 Difference]: With dead ends: 455 [2021-11-23 03:54:40,456 INFO L226 Difference]: Without dead ends: 455 [2021-11-23 03:54:40,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:54:40,457 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 414 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:40,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 631 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:54:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-23 03:54:40,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 302. [2021-11-23 03:54:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 252 states have (on average 1.8095238095238095) internal successors, (456), 301 states have internal predecessors, (456), 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) [2021-11-23 03:54:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 456 transitions. [2021-11-23 03:54:40,466 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 456 transitions. Word has length 21 [2021-11-23 03:54:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:40,466 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 456 transitions. [2021-11-23 03:54:40,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 456 transitions. [2021-11-23 03:54:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:54:40,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:40,467 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, 1] [2021-11-23 03:54:40,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 03:54:40,467 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -132324160, now seen corresponding path program 1 times [2021-11-23 03:54:40,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:40,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266946882] [2021-11-23 03:54:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:40,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:40,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:40,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266946882] [2021-11-23 03:54:40,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266946882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:40,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:40,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:54:40,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238207263] [2021-11-23 03:54:40,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:40,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:54:40,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:54:40,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:54:40,596 INFO L87 Difference]: Start difference. First operand 302 states and 456 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:41,174 INFO L93 Difference]: Finished difference Result 444 states and 650 transitions. [2021-11-23 03:54:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:54:41,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 03:54:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:41,177 INFO L225 Difference]: With dead ends: 444 [2021-11-23 03:54:41,177 INFO L226 Difference]: Without dead ends: 444 [2021-11-23 03:54:41,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:54:41,178 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 418 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:41,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 635 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:54:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-23 03:54:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 306. [2021-11-23 03:54:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 256 states have (on average 1.80078125) internal successors, (461), 305 states have internal predecessors, (461), 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) [2021-11-23 03:54:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 461 transitions. [2021-11-23 03:54:41,185 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 461 transitions. Word has length 21 [2021-11-23 03:54:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:41,185 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 461 transitions. [2021-11-23 03:54:41,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 461 transitions. [2021-11-23 03:54:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:54:41,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:41,186 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, 1] [2021-11-23 03:54:41,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 03:54:41,187 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash -132324159, now seen corresponding path program 1 times [2021-11-23 03:54:41,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:41,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175653835] [2021-11-23 03:54:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:41,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:41,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:41,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175653835] [2021-11-23 03:54:41,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175653835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:41,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:41,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:54:41,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115421487] [2021-11-23 03:54:41,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:41,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:54:41,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:41,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:54:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:54:41,402 INFO L87 Difference]: Start difference. First operand 306 states and 461 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:42,038 INFO L93 Difference]: Finished difference Result 448 states and 654 transitions. [2021-11-23 03:54:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:54:42,040 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 03:54:42,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:42,042 INFO L225 Difference]: With dead ends: 448 [2021-11-23 03:54:42,042 INFO L226 Difference]: Without dead ends: 448 [2021-11-23 03:54:42,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:54:42,044 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 415 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:42,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 454 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:54:42,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-23 03:54:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 306. [2021-11-23 03:54:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 256 states have (on average 1.796875) internal successors, (460), 305 states have internal predecessors, (460), 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) [2021-11-23 03:54:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 460 transitions. [2021-11-23 03:54:42,051 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 460 transitions. Word has length 21 [2021-11-23 03:54:42,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:42,052 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 460 transitions. [2021-11-23 03:54:42,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 460 transitions. [2021-11-23 03:54:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:54:42,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:42,053 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, 1, 1, 1, 1] [2021-11-23 03:54:42,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 03:54:42,053 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:42,054 INFO L85 PathProgramCache]: Analyzing trace with hash 711177341, now seen corresponding path program 1 times [2021-11-23 03:54:42,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:42,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355619997] [2021-11-23 03:54:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:42,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:42,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:42,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355619997] [2021-11-23 03:54:42,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355619997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:42,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:42,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:54:42,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852906110] [2021-11-23 03:54:42,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:42,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:54:42,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:42,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:54:42,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:54:42,193 INFO L87 Difference]: Start difference. First operand 306 states and 460 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-11-23 03:54:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:42,705 INFO L93 Difference]: Finished difference Result 452 states and 658 transitions. [2021-11-23 03:54:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:54:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 [2021-11-23 03:54:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:42,707 INFO L225 Difference]: With dead ends: 452 [2021-11-23 03:54:42,708 INFO L226 Difference]: Without dead ends: 452 [2021-11-23 03:54:42,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:54:42,709 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 308 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:42,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 648 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:54:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-23 03:54:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 309. [2021-11-23 03:54:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 259 states have (on average 1.7915057915057915) internal successors, (464), 308 states have internal predecessors, (464), 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) [2021-11-23 03:54:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 464 transitions. [2021-11-23 03:54:42,717 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 464 transitions. Word has length 24 [2021-11-23 03:54:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:42,717 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 464 transitions. [2021-11-23 03:54:42,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-11-23 03:54:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 464 transitions. [2021-11-23 03:54:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:54:42,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:42,718 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, 1, 1, 1, 1] [2021-11-23 03:54:42,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 03:54:42,719 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:42,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 711178432, now seen corresponding path program 1 times [2021-11-23 03:54:42,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:42,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11424324] [2021-11-23 03:54:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:42,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:42,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:42,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11424324] [2021-11-23 03:54:42,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11424324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:42,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:42,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:54:42,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861509337] [2021-11-23 03:54:42,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:42,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:54:42,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:54:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:54:42,757 INFO L87 Difference]: Start difference. First operand 309 states and 464 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-23 03:54:42,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:42,974 INFO L93 Difference]: Finished difference Result 308 states and 460 transitions. [2021-11-23 03:54:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:54:42,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 [2021-11-23 03:54:42,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:42,976 INFO L225 Difference]: With dead ends: 308 [2021-11-23 03:54:42,976 INFO L226 Difference]: Without dead ends: 308 [2021-11-23 03:54:42,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:54:42,977 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 22 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:42,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 251 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:54:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-23 03:54:42,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-11-23 03:54:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 259 states have (on average 1.776061776061776) internal successors, (460), 307 states have internal predecessors, (460), 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) [2021-11-23 03:54:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 460 transitions. [2021-11-23 03:54:42,984 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 460 transitions. Word has length 24 [2021-11-23 03:54:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:42,985 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 460 transitions. [2021-11-23 03:54:42,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-23 03:54:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 460 transitions. [2021-11-23 03:54:42,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:54:42,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:42,986 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, 1, 1, 1, 1] [2021-11-23 03:54:42,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 03:54:42,986 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash 711178433, now seen corresponding path program 1 times [2021-11-23 03:54:42,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:42,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124943337] [2021-11-23 03:54:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:42,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:43,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:43,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124943337] [2021-11-23 03:54:43,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124943337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:43,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:43,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:54:43,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002500274] [2021-11-23 03:54:43,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:43,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:54:43,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:43,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:54:43,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:54:43,045 INFO L87 Difference]: Start difference. First operand 308 states and 460 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-23 03:54:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:43,344 INFO L93 Difference]: Finished difference Result 307 states and 456 transitions. [2021-11-23 03:54:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:54:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 [2021-11-23 03:54:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:43,346 INFO L225 Difference]: With dead ends: 307 [2021-11-23 03:54:43,346 INFO L226 Difference]: Without dead ends: 307 [2021-11-23 03:54:43,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:54:43,347 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 29 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:43,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 240 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:54:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-23 03:54:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-23 03:54:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 259 states have (on average 1.7606177606177607) internal successors, (456), 306 states have internal predecessors, (456), 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) [2021-11-23 03:54:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 456 transitions. [2021-11-23 03:54:43,354 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 456 transitions. Word has length 24 [2021-11-23 03:54:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:43,354 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 456 transitions. [2021-11-23 03:54:43,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-23 03:54:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 456 transitions. [2021-11-23 03:54:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:54:43,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:43,355 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, 1, 1, 1, 1, 1] [2021-11-23 03:54:43,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 03:54:43,356 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr98ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:43,356 INFO L85 PathProgramCache]: Analyzing trace with hash 571661437, now seen corresponding path program 1 times [2021-11-23 03:54:43,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:43,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191129494] [2021-11-23 03:54:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:43,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:43,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:43,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191129494] [2021-11-23 03:54:43,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191129494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:43,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:43,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:54:43,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652369603] [2021-11-23 03:54:43,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:43,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:54:43,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:43,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:54:43,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:54:43,474 INFO L87 Difference]: Start difference. First operand 307 states and 456 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:43,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:43,979 INFO L93 Difference]: Finished difference Result 443 states and 641 transitions. [2021-11-23 03:54:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:54:43,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 03:54:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:43,982 INFO L225 Difference]: With dead ends: 443 [2021-11-23 03:54:43,982 INFO L226 Difference]: Without dead ends: 443 [2021-11-23 03:54:43,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:54:43,982 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 195 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:43,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 511 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:54:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-23 03:54:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 308. [2021-11-23 03:54:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 260 states have (on average 1.7576923076923077) internal successors, (457), 307 states have internal predecessors, (457), 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) [2021-11-23 03:54:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 457 transitions. [2021-11-23 03:54:43,990 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 457 transitions. Word has length 25 [2021-11-23 03:54:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:43,990 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 457 transitions. [2021-11-23 03:54:43,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 457 transitions. [2021-11-23 03:54:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:54:43,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:43,992 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, 1, 1, 1, 1, 1] [2021-11-23 03:54:43,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 03:54:43,992 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:43,992 INFO L85 PathProgramCache]: Analyzing trace with hash 640560285, now seen corresponding path program 1 times [2021-11-23 03:54:43,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:43,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346277610] [2021-11-23 03:54:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:43,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:44,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:44,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346277610] [2021-11-23 03:54:44,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346277610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:44,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:44,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:54:44,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647696728] [2021-11-23 03:54:44,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:44,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:54:44,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:54:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:54:44,051 INFO L87 Difference]: Start difference. First operand 308 states and 457 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:44,235 INFO L93 Difference]: Finished difference Result 307 states and 456 transitions. [2021-11-23 03:54:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:54:44,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 03:54:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:44,237 INFO L225 Difference]: With dead ends: 307 [2021-11-23 03:54:44,237 INFO L226 Difference]: Without dead ends: 307 [2021-11-23 03:54:44,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:54:44,238 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 4 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:44,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 288 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:54:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-23 03:54:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-23 03:54:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 260 states have (on average 1.7538461538461538) internal successors, (456), 306 states have internal predecessors, (456), 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) [2021-11-23 03:54:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 456 transitions. [2021-11-23 03:54:44,245 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 456 transitions. Word has length 25 [2021-11-23 03:54:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:44,245 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 456 transitions. [2021-11-23 03:54:44,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 456 transitions. [2021-11-23 03:54:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:54:44,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:44,246 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, 1, 1, 1, 1, 1] [2021-11-23 03:54:44,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 03:54:44,246 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:44,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash 640560284, now seen corresponding path program 1 times [2021-11-23 03:54:44,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:44,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847977456] [2021-11-23 03:54:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:44,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:44,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:44,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847977456] [2021-11-23 03:54:44,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847977456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:44,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:44,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:54:44,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018718330] [2021-11-23 03:54:44,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:44,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:54:44,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:44,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:54:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:54:44,288 INFO L87 Difference]: Start difference. First operand 307 states and 456 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:44,465 INFO L93 Difference]: Finished difference Result 306 states and 455 transitions. [2021-11-23 03:54:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:54:44,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 03:54:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:44,466 INFO L225 Difference]: With dead ends: 306 [2021-11-23 03:54:44,467 INFO L226 Difference]: Without dead ends: 306 [2021-11-23 03:54:44,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:54:44,467 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 2 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:44,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 315 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:54:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-23 03:54:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-11-23 03:54:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 260 states have (on average 1.75) internal successors, (455), 305 states have internal predecessors, (455), 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) [2021-11-23 03:54:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 455 transitions. [2021-11-23 03:54:44,474 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 455 transitions. Word has length 25 [2021-11-23 03:54:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:44,475 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 455 transitions. [2021-11-23 03:54:44,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 455 transitions. [2021-11-23 03:54:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:54:44,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:44,476 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] [2021-11-23 03:54:44,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 03:54:44,476 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:54:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:44,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1734713911, now seen corresponding path program 1 times [2021-11-23 03:54:44,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:44,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968309972] [2021-11-23 03:54:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:44,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:44,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968309972] [2021-11-23 03:54:44,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968309972] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:54:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247731488] [2021-11-23 03:54:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:44,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:54:44,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:54:44,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:54:44,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:54:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:44,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 03:54:44,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:54:45,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:54:45,040 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 13 treesize of output 9 [2021-11-23 03:54:45,054 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:54:45,054 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 [2021-11-23 03:54:45,060 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 [2021-11-23 03:54:45,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:45,111 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 26 [2021-11-23 03:54:45,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:45,124 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 22 [2021-11-23 03:54:45,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:45,278 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:54:45,278 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 2 case distinctions, treesize of input 84 treesize of output 65 [2021-11-23 03:54:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:45,301 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-23 03:54:45,301 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 61 treesize of output 57 [2021-11-23 03:54:45,351 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:54:45,351 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 [2021-11-23 03:54:45,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:45,450 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 31 treesize of output 33 [2021-11-23 03:54:45,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:45,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 03:54:45,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:45,567 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:54:45,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 69 [2021-11-23 03:54:45,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:54:45,587 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-23 03:54:45,587 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 75 treesize of output 71 [2021-11-23 03:54:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:45,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:00,274 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem11#1.offset| Int)) (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) |ULTIMATE.start_main_#t~mem11#1.offset| |c_ULTIMATE.start_main_~tmpList~0#1.offset|))) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ |c_ULTIMATE.start_main_~tree~0#1.offset| 4)) 0)) (forall ((|ULTIMATE.start_main_#t~mem11#1.offset| Int)) (= (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) |ULTIMATE.start_main_#t~mem11#1.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base|))) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ |c_ULTIMATE.start_main_~tree~0#1.offset| 4)) 0))) is different from false [2021-11-23 03:55:02,285 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~tmpList~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem11#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.base|)) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (store .cse0 .cse1 (store (select .cse0 .cse1) |ULTIMATE.start_main_#t~mem11#1.offset| |ULTIMATE.start_main_~tmpList~0#1.offset|))) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ |c_ULTIMATE.start_main_~tree~0#1.offset| 4)) 0)) (forall ((|ULTIMATE.start_main_~tmpList~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem11#1.offset| Int)) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.base|)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (store .cse2 .cse3 (store (select .cse2 .cse3) |ULTIMATE.start_main_#t~mem11#1.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base|)))) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ |c_ULTIMATE.start_main_~tree~0#1.offset| 4)) 0))) is different from false [2021-11-23 03:55:15,499 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 03:55:15,500 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 584 treesize of output 583 [2021-11-23 03:55:17,548 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_39| Int)) (or (and (forall ((v_prenex_7 Int) (v_prenex_11 Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int)) (= (select (select (let ((.cse2 (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~malloc4#1.base|)))) (store .cse4 |c_ULTIMATE.start_main_#t~malloc4#1.base| (store (select .cse4 |c_ULTIMATE.start_main_#t~malloc4#1.base|) v_prenex_11 v_prenex_10))))) (store .cse3 |v_ULTIMATE.start_main_~tmpList~0#1.base_39| (store (select .cse3 |v_ULTIMATE.start_main_~tmpList~0#1.base_39|) v_prenex_7 v_prenex_8))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) v_prenex_9 |v_ULTIMATE.start_main_~tmpList~0#1.base_39|))))) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ |c_ULTIMATE.start_main_~tree~0#1.offset| 4)) 0)) (forall ((|ULTIMATE.start_main_#t~mem6#1.offset| Int) (|ULTIMATE.start_main_~tmpList~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem11#1.offset| Int) (|ULTIMATE.start_main_#t~mem6#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int) (|ULTIMATE.start_main_#t~mem5#1.offset| Int)) (= (select (select (let ((.cse9 (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse5 (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse9 |c_ULTIMATE.start_main_#t~malloc4#1.offset|)))) (store .cse11 |c_ULTIMATE.start_main_#t~malloc4#1.base| (store (select .cse11 |c_ULTIMATE.start_main_#t~malloc4#1.base|) |ULTIMATE.start_main_#t~mem5#1.offset| |ULTIMATE.start_main_#t~mem6#1.offset|))))) (store .cse10 |v_ULTIMATE.start_main_~tmpList~0#1.base_39| (store (select .cse10 |v_ULTIMATE.start_main_~tmpList~0#1.base_39|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.offset|)))) (.cse6 (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse9 |c_ULTIMATE.start_main_#t~malloc4#1.base|)))) (store .cse8 |c_ULTIMATE.start_main_#t~malloc4#1.base| (store (select .cse8 |c_ULTIMATE.start_main_#t~malloc4#1.base|) |ULTIMATE.start_main_#t~mem5#1.offset| |ULTIMATE.start_main_#t~mem6#1.base|))))) (store .cse7 |v_ULTIMATE.start_main_~tmpList~0#1.base_39| (store (select .cse7 |v_ULTIMATE.start_main_~tmpList~0#1.base_39|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.base|))) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse9))) (store .cse5 .cse6 (store (select .cse5 .cse6) |ULTIMATE.start_main_#t~mem11#1.offset| |ULTIMATE.start_main_~tmpList~0#1.offset|)))) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ |c_ULTIMATE.start_main_~tree~0#1.offset| 4)) 0))) (= |v_ULTIMATE.start_main_~tmpList~0#1.base_39| |c_ULTIMATE.start_main_~tree~0#1.base|))) is different from false [2021-11-23 03:55:18,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:55:18,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1267327591] [2021-11-23 03:55:18,886 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-23 03:55:18,886 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:55:18,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:55:18,887 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:55:18,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:55:18,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 03:55:18,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,933 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 30 treesize of output 21 [2021-11-23 03:55:18,940 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 11 treesize of output 7 [2021-11-23 03:55:18,951 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 11 treesize of output 7 [2021-11-23 03:55:18,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:55:18,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-23 03:55:18,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,985 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 29 treesize of output 35 [2021-11-23 03:55:18,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:18,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:55:19,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,017 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 30 treesize of output 32 [2021-11-23 03:55:19,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,028 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 [2021-11-23 03:55:19,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,041 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 59 treesize of output 61 [2021-11-23 03:55:19,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,125 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:55:19,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 184 [2021-11-23 03:55:19,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,170 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:55:19,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 216 [2021-11-23 03:55:19,195 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-23 03:55:19,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 164 [2021-11-23 03:55:19,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,258 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 40 treesize of output 49 [2021-11-23 03:55:19,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,349 INFO L354 Elim1Store]: treesize reduction 142, result has 10.7 percent of original size [2021-11-23 03:55:19,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 254 treesize of output 186 [2021-11-23 03:55:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,393 INFO L354 Elim1Store]: treesize reduction 166, result has 9.3 percent of original size [2021-11-23 03:55:19,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 244 treesize of output 230 [2021-11-23 03:55:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,413 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 30 treesize of output 21 [2021-11-23 03:55:19,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,522 INFO L354 Elim1Store]: treesize reduction 207, result has 13.8 percent of original size [2021-11-23 03:55:19,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 339 treesize of output 234 [2021-11-23 03:55:19,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:19,589 INFO L354 Elim1Store]: treesize reduction 195, result has 14.5 percent of original size [2021-11-23 03:55:19,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 280 treesize of output 245 [2021-11-23 03:55:19,624 INFO L354 Elim1Store]: treesize reduction 116, result has 11.5 percent of original size [2021-11-23 03:55:19,624 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 257 treesize of output 224 [2021-11-23 03:55:19,892 INFO L354 Elim1Store]: treesize reduction 252, result has 20.5 percent of original size [2021-11-23 03:55:19,892 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 554 treesize of output 577 [2021-11-23 03:55:20,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:55:20,594 INFO L354 Elim1Store]: treesize reduction 326, result has 12.6 percent of original size [2021-11-23 03:55:20,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 679 treesize of output 558 [2021-11-23 03:55:20,617 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 03:55:20,617 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 1 case distinctions, treesize of input 558 treesize of output 541 [2021-11-23 03:55:20,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:20,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:55:20,786 INFO L354 Elim1Store]: treesize reduction 224, result has 15.5 percent of original size [2021-11-23 03:55:20,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 541 treesize of output 527 [2021-11-23 03:55:21,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:55:21,404 INFO L354 Elim1Store]: treesize reduction 360, result has 13.3 percent of original size [2021-11-23 03:55:21,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 815 treesize of output 594 [2021-11-23 03:55:21,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:55:21,499 INFO L354 Elim1Store]: treesize reduction 212, result has 15.9 percent of original size [2021-11-23 03:55:21,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 594 treesize of output 526 [2021-11-23 03:55:21,530 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-23 03:55:21,531 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 526 treesize of output 509 [2021-11-23 03:55:21,886 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 [2021-11-23 03:55:21,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:55:21,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,925 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:55:21,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-11-23 03:55:21,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:21,941 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:55:21,941 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 77 [2021-11-23 03:55:21,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:55:21,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:22,020 INFO L354 Elim1Store]: treesize reduction 76, result has 42.9 percent of original size [2021-11-23 03:55:22,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 189 treesize of output 164 [2021-11-23 03:55:22,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:22,071 INFO L354 Elim1Store]: treesize reduction 52, result has 46.4 percent of original size [2021-11-23 03:55:22,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 158 treesize of output 139 [2021-11-23 03:55:22,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 118 [2021-11-23 03:55:22,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:55:22,464 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 [2021-11-23 03:55:22,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:22,506 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:55:22,507 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-11-23 03:55:22,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:22,530 INFO L354 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2021-11-23 03:55:22,531 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 77 [2021-11-23 03:55:22,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:55:22,553 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:55:31,423 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21948#(and (or (and (<= 0 |#NULL.base|) (exists ((|v_ULTIMATE.start_main_~tmp~0#1.base_108| Int) (|v_ULTIMATE.start_main_~tmp~0#1.offset_89| Int)) (and (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~tmp~0#1.base_108|) |v_ULTIMATE.start_main_~tmp~0#1.offset_89|) |ULTIMATE.start_main_~tmp~0#1.base|) (= |ULTIMATE.start_main_~tmp~0#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~tmp~0#1.base_108|) |v_ULTIMATE.start_main_~tmp~0#1.offset_89|)) (= (select |#valid| |v_ULTIMATE.start_main_~tmp~0#1.base_108|) 1) (<= 0 |v_ULTIMATE.start_main_~tmp~0#1.offset_89|) (<= (+ |v_ULTIMATE.start_main_~tmp~0#1.offset_89| 4) (select |#length| |v_ULTIMATE.start_main_~tmp~0#1.base_108|)))) (<= 0 |ULTIMATE.start_main_~tree~0#1.offset|) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~tree~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|)) (and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~tree~0#1.offset|) (= |ULTIMATE.start_main_~tmp~0#1.offset| |ULTIMATE.start_main_~tree~0#1.offset|) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (= |ULTIMATE.start_main_~tmp~0#1.base| |ULTIMATE.start_main_~tree~0#1.base|) (<= |ULTIMATE.start_main_~tree~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))) (not (= (select |#valid| |ULTIMATE.start_main_~tmp~0#1.base|) 1)))' at error location [2021-11-23 03:55:31,423 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:55:31,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:55:31,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-23 03:55:31,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012907642] [2021-11-23 03:55:31,423 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:55:31,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:55:31,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:55:31,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2102, Unknown=15, NotChecked=288, Total=2652 [2021-11-23 03:55:31,425 INFO L87 Difference]: Start difference. First operand 306 states and 455 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:32,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:32,682 INFO L93 Difference]: Finished difference Result 474 states and 647 transitions. [2021-11-23 03:55:32,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:55:32,682 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 03:55:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:32,684 INFO L225 Difference]: With dead ends: 474 [2021-11-23 03:55:32,684 INFO L226 Difference]: Without dead ends: 474 [2021-11-23 03:55:32,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=360, Invalid=3177, Unknown=15, NotChecked=354, Total=3906 [2021-11-23 03:55:32,686 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 519 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:32,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 981 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:55:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-23 03:55:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 317. [2021-11-23 03:55:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 271 states have (on average 1.7306273062730628) internal successors, (469), 316 states have internal predecessors, (469), 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) [2021-11-23 03:55:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 469 transitions. [2021-11-23 03:55:32,694 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 469 transitions. Word has length 26 [2021-11-23 03:55:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:32,694 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 469 transitions. [2021-11-23 03:55:32,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:32,695 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 469 transitions. [2021-11-23 03:55:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:55:32,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:32,695 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:32,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:55:32,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:55:32,914 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr99ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:55:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 541635711, now seen corresponding path program 1 times [2021-11-23 03:55:32,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:32,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707352510] [2021-11-23 03:55:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:32,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:32,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:32,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707352510] [2021-11-23 03:55:32,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707352510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:32,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:32,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:55:32,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354519627] [2021-11-23 03:55:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:32,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:55:32,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:55:32,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:55:32,961 INFO L87 Difference]: Start difference. First operand 317 states and 469 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:33,210 INFO L93 Difference]: Finished difference Result 316 states and 465 transitions. [2021-11-23 03:55:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:55:33,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 03:55:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:33,212 INFO L225 Difference]: With dead ends: 316 [2021-11-23 03:55:33,212 INFO L226 Difference]: Without dead ends: 316 [2021-11-23 03:55:33,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:55:33,213 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 22 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:33,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 237 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:55:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-23 03:55:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-11-23 03:55:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 271 states have (on average 1.7158671586715868) internal successors, (465), 315 states have internal predecessors, (465), 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) [2021-11-23 03:55:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 465 transitions. [2021-11-23 03:55:33,221 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 465 transitions. Word has length 26 [2021-11-23 03:55:33,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:33,222 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 465 transitions. [2021-11-23 03:55:33,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 465 transitions. [2021-11-23 03:55:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:55:33,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:33,223 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:33,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 03:55:33,223 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:55:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 542741986, now seen corresponding path program 1 times [2021-11-23 03:55:33,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442041203] [2021-11-23 03:55:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:33,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:33,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:33,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442041203] [2021-11-23 03:55:33,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442041203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:33,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:33,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:55:33,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254347786] [2021-11-23 03:55:33,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:33,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:55:33,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:55:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:55:33,484 INFO L87 Difference]: Start difference. First operand 316 states and 465 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:34,645 INFO L93 Difference]: Finished difference Result 555 states and 777 transitions. [2021-11-23 03:55:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 03:55:34,645 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 03:55:34,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:34,647 INFO L225 Difference]: With dead ends: 555 [2021-11-23 03:55:34,648 INFO L226 Difference]: Without dead ends: 555 [2021-11-23 03:55:34,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:55:34,648 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 400 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:34,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1077 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 03:55:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-23 03:55:34,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 320. [2021-11-23 03:55:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 275 states have (on average 1.709090909090909) internal successors, (470), 319 states have internal predecessors, (470), 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) [2021-11-23 03:55:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 470 transitions. [2021-11-23 03:55:34,655 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 470 transitions. Word has length 26 [2021-11-23 03:55:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:34,656 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 470 transitions. [2021-11-23 03:55:34,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 470 transitions. [2021-11-23 03:55:34,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:55:34,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:34,657 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:34,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 03:55:34,657 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:55:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash 542741987, now seen corresponding path program 1 times [2021-11-23 03:55:34,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:34,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301729046] [2021-11-23 03:55:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:34,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:34,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301729046] [2021-11-23 03:55:34,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301729046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:34,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:34,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:55:34,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920828640] [2021-11-23 03:55:34,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:34,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:55:34,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:34,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:55:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:55:34,860 INFO L87 Difference]: Start difference. First operand 320 states and 470 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:35,627 INFO L93 Difference]: Finished difference Result 439 states and 635 transitions. [2021-11-23 03:55:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:55:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 03:55:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:35,629 INFO L225 Difference]: With dead ends: 439 [2021-11-23 03:55:35,629 INFO L226 Difference]: Without dead ends: 439 [2021-11-23 03:55:35,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:55:35,630 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 203 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:35,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 694 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:55:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-23 03:55:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 316. [2021-11-23 03:55:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 271 states have (on average 1.7121771217712176) internal successors, (464), 315 states have internal predecessors, (464), 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) [2021-11-23 03:55:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 464 transitions. [2021-11-23 03:55:35,637 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 464 transitions. Word has length 26 [2021-11-23 03:55:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:35,637 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 464 transitions. [2021-11-23 03:55:35,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 464 transitions. [2021-11-23 03:55:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:55:35,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:35,638 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] [2021-11-23 03:55:35,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 03:55:35,639 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 100 more)] === [2021-11-23 03:55:35,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:35,639 INFO L85 PathProgramCache]: Analyzing trace with hash -516582066, now seen corresponding path program 1 times [2021-11-23 03:55:35,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:35,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116655574] [2021-11-23 03:55:35,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:35,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:35,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:35,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116655574] [2021-11-23 03:55:35,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116655574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:55:35,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630293640] [2021-11-23 03:55:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:35,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:55:35,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:55:35,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:55:35,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557a1b88-00db-46f2-a5b5-847eb436e6ad/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:55:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:36,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-23 03:55:36,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:36,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:55:36,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:55:36,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 03:55:36,166 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:55:36,166 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 [2021-11-23 03:55:36,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:55:36,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,186 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 21 treesize of output 20 [2021-11-23 03:55:36,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,233 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 36 [2021-11-23 03:55:36,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,244 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 30 treesize of output 32 [2021-11-23 03:55:36,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,404 INFO L354 Elim1Store]: treesize reduction 84, result has 23.6 percent of original size [2021-11-23 03:55:36,404 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 82 [2021-11-23 03:55:36,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,432 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:55:36,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 74 [2021-11-23 03:55:36,491 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:55:36,493 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 [2021-11-23 03:55:36,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,667 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-23 03:55:36,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,679 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 0 case distinctions, treesize of input 49 treesize of output 48 [2021-11-23 03:55:36,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,817 INFO L354 Elim1Store]: treesize reduction 84, result has 23.6 percent of original size [2021-11-23 03:55:36,818 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 91 [2021-11-23 03:55:36,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:55:36,847 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:55:36,847 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 6 case distinctions, treesize of input 100 treesize of output 99 [2021-11-23 03:55:37,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 39 [2021-11-23 03:55:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:37,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:56:08,066 INFO L354 Elim1Store]: treesize reduction 5, result has 92.2 percent of original size [2021-11-23 03:56:08,067 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 187 treesize of output 186 [2021-11-23 03:56:10,111 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~tmpList~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem11#1.offset| Int)) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (store .cse3 .cse4 (store (select .cse3 .cse4) |ULTIMATE.start_main_#t~mem11#1.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base|)))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (or (and (= 0 .cse0) (forall ((|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tmpList~0#1.base|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.offset|))) (.cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tmpList~0#1.base|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.base|)) |c_ULTIMATE.start_main_~tree~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|)))) (store .cse1 .cse2 (store (select .cse1 .cse2) |ULTIMATE.start_main_#t~mem11#1.offset| |ULTIMATE.start_main_~tmpList~0#1.offset|))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) 0))) (= |c_ULTIMATE.start_main_#t~mem9#1.base| .cse0)))) is different from false [2021-11-23 03:56:34,005 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 03:56:34,006 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 897 treesize of output 896 [2021-11-23 03:56:36,207 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tmpList~0#1.base_41| Int) (|ULTIMATE.start_main_~tmpList~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem11#1.offset| Int) (|ULTIMATE.start_main_#t~mem6#1.base| Int) (|ULTIMATE.start_main_#t~mem5#1.offset| Int)) (let ((.cse2 (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse1 (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~malloc4#1.base|)))) (store .cse12 |c_ULTIMATE.start_main_#t~malloc4#1.base| (store (select .cse12 |c_ULTIMATE.start_main_#t~malloc4#1.base|) |ULTIMATE.start_main_#t~mem5#1.offset| |ULTIMATE.start_main_#t~mem6#1.base|))))) (let ((.cse0 (select (select (let ((.cse10 (store .cse1 |v_ULTIMATE.start_main_~tmpList~0#1.base_41| (store (select .cse1 |v_ULTIMATE.start_main_~tmpList~0#1.base_41|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.base|)))) (let ((.cse11 (select (select .cse10 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2))) (store .cse10 .cse11 (store (select .cse10 .cse11) |ULTIMATE.start_main_#t~mem11#1.offset| |v_ULTIMATE.start_main_~tmpList~0#1.base_41|)))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|))) (or (= |v_ULTIMATE.start_main_~tmpList~0#1.base_41| |c_ULTIMATE.start_main_~tree~0#1.base|) (= .cse0 (select (select .cse1 |c_ULTIMATE.start_main_~tree~0#1.base|) .cse2)) (and (forall ((|ULTIMATE.start_main_#t~mem6#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (= (select (select (let ((.cse7 (+ 8 |c_ULTIMATE.start_main_~tree~0#1.offset|))) (let ((.cse3 (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse7 |c_ULTIMATE.start_main_#t~malloc4#1.offset|)))) (store .cse9 |c_ULTIMATE.start_main_#t~malloc4#1.base| (store (select .cse9 |c_ULTIMATE.start_main_#t~malloc4#1.base|) |ULTIMATE.start_main_#t~mem5#1.offset| |ULTIMATE.start_main_#t~mem6#1.offset|))))) (store .cse8 |v_ULTIMATE.start_main_~tmpList~0#1.base_41| (store (select .cse8 |v_ULTIMATE.start_main_~tmpList~0#1.base_41|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.offset|)))) (.cse4 (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~tree~0#1.base|) .cse7 |c_ULTIMATE.start_main_#t~malloc4#1.base|)))) (store .cse6 |c_ULTIMATE.start_main_#t~malloc4#1.base| (store (select .cse6 |c_ULTIMATE.start_main_#t~malloc4#1.base|) |ULTIMATE.start_main_#t~mem5#1.offset| |ULTIMATE.start_main_#t~mem6#1.base|))))) (store .cse5 |v_ULTIMATE.start_main_~tmpList~0#1.base_41| (store (select .cse5 |v_ULTIMATE.start_main_~tmpList~0#1.base_41|) |ULTIMATE.start_main_~tmpList~0#1.offset| |ULTIMATE.start_main_#t~mem10#1.base|))) |c_ULTIMATE.start_main_~tree~0#1.base|) .cse7))) (store .cse3 .cse4 (store (select .cse3 .cse4) |ULTIMATE.start_main_#t~mem11#1.offset| |ULTIMATE.start_main_~tmpList~0#1.offset|)))) |c_ULTIMATE.start_main_~tree~0#1.base|) |c_ULTIMATE.start_main_~tree~0#1.offset|) 0)) (= .cse0 0))))))) is different from false [2021-11-23 03:56:51,963 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:56:51,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1973080378] [2021-11-23 03:56:51,966 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-23 03:56:51,966 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:56:51,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:56:51,967 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:56:51,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:56:51,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:51,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:51,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 03:56:52,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,013 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 30 treesize of output 21 [2021-11-23 03:56:52,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-23 03:56:52,031 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 11 treesize of output 7 [2021-11-23 03:56:52,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,051 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 21 treesize of output 20 [2021-11-23 03:56:52,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,061 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 [2021-11-23 03:56:52,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,076 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 29 treesize of output 35 [2021-11-23 03:56:52,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 03:56:52,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,105 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 59 treesize of output 61 [2021-11-23 03:56:52,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,119 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 [2021-11-23 03:56:52,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 03:56:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,202 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:56:52,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 184 [2021-11-23 03:56:52,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,239 INFO L354 Elim1Store]: treesize reduction 120, result has 17.8 percent of original size [2021-11-23 03:56:52,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 216 [2021-11-23 03:56:52,257 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-23 03:56:52,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 164 [2021-11-23 03:56:52,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,307 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 40 treesize of output 49 [2021-11-23 03:56:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,391 INFO L354 Elim1Store]: treesize reduction 148, result has 6.9 percent of original size [2021-11-23 03:56:52,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 254 treesize of output 180 [2021-11-23 03:56:52,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,432 INFO L354 Elim1Store]: treesize reduction 144, result has 9.4 percent of original size [2021-11-23 03:56:52,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 217 treesize of output 211 [2021-11-23 03:56:52,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,449 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 30 treesize of output 21 [2021-11-23 03:56:52,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,550 INFO L354 Elim1Store]: treesize reduction 215, result has 13.3 percent of original size [2021-11-23 03:56:52,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 337 treesize of output 242 [2021-11-23 03:56:52,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,605 INFO L354 Elim1Store]: treesize reduction 195, result has 14.5 percent of original size [2021-11-23 03:56:52,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 284 treesize of output 245 [2021-11-23 03:56:52,629 INFO L354 Elim1Store]: treesize reduction 116, result has 11.5 percent of original size [2021-11-23 03:56:52,630 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 257 treesize of output 224 [2021-11-23 03:56:52,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,752 INFO L354 Elim1Store]: treesize reduction 154, result has 16.3 percent of original size [2021-11-23 03:56:52,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 255 treesize of output 261 [2021-11-23 03:56:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,887 INFO L354 Elim1Store]: treesize reduction 278, result has 7.9 percent of original size [2021-11-23 03:56:52,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 335 treesize of output 269 [2021-11-23 03:56:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,935 INFO L354 Elim1Store]: treesize reduction 162, result has 13.4 percent of original size [2021-11-23 03:56:52,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 378 treesize of output 358 [2021-11-23 03:56:52,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:52,954 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 30 treesize of output 21 [2021-11-23 03:56:53,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:53,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:53,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:53,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:53,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:56:53,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:56:53,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:53,249 INFO L354 Elim1Store]: treesize reduction 243, result has 22.6 percent of original size [2021-11-23 03:56:53,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 821 treesize of output 657 [2021-11-23 03:56:53,287 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-23 03:56:53,287 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 657 treesize of output 640 [2021-11-23 03:56:53,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:53,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:56:53,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:56:53,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:53,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:53,478 INFO L354 Elim1Store]: treesize reduction 259, result has 17.5 percent of original size [2021-11-23 03:56:53,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 640 treesize of output 622 [2021-11-23 03:56:54,647 INFO L354 Elim1Store]: treesize reduction 376, result has 13.4 percent of original size [2021-11-23 03:56:54,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 1744 treesize of output 1678 [2021-11-23 03:56:58,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:58,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:58,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:58,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:58,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:58,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:56:58,982 INFO L354 Elim1Store]: treesize reduction 468, result has 20.4 percent of original size [2021-11-23 03:56:58,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 5 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 49 case distinctions, treesize of input 7198 treesize of output 2758 [2021-11-23 03:56:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:59,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:59,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:59,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:59,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:59,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:56:59,609 INFO L354 Elim1Store]: treesize reduction 484, result has 19.5 percent of original size [2021-11-23 03:56:59,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 60 case distinctions, treesize of input 2758 treesize of output 2407 [2021-11-23 03:56:59,662 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 03:56:59,663 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 1 case distinctions, treesize of input 2407 treesize of output 2342