./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.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_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/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_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/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_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/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 6e14aa3eeddc5d261248d26114db1375e0f229d6456e2c7754877a082dc10921 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:42:32,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:42:32,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:42:32,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:42:32,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:42:32,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:42:32,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:42:32,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:42:32,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:42:32,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:42:32,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:42:32,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:42:32,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:42:32,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:42:32,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:42:32,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:42:32,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:42:32,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:42:32,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:42:32,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:42:32,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:42:32,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:42:32,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:42:32,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:42:32,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:42:32,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:42:32,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:42:32,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:42:32,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:42:32,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:42:32,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:42:32,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:42:32,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:42:32,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:42:32,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:42:32,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:42:32,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:42:32,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:42:32,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:42:32,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:42:32,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:42:32,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:42:32,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:42:32,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:42:32,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:42:32,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:42:32,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:42:32,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:42:32,402 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:42:32,402 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:42:32,402 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:42:32,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:42:32,403 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:42:32,403 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:42:32,403 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:42:32,403 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:42:32,403 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:42:32,404 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:42:32,404 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:42:32,404 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:42:32,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:42:32,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:42:32,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:42:32,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:42:32,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:42:32,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:42:32,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:42:32,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:42:32,406 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:42:32,406 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:42:32,407 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:42:32,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:42:32,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:42:32,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:42:32,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:42:32,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:42:32,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:42:32,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:42:32,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:42:32,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:42:32,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:42:32,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:42:32,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:42:32,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:42:32,409 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_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e14aa3eeddc5d261248d26114db1375e0f229d6456e2c7754877a082dc10921 [2021-11-23 02:42:32,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:42:32,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:42:32,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:42:32,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:42:32,719 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:42:32,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i [2021-11-23 02:42:32,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/data/7432f88c1/9b4da0a8743f4171a8d260dfe88f0f51/FLAG75c8c248c [2021-11-23 02:42:33,382 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:42:33,383 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i [2021-11-23 02:42:33,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/data/7432f88c1/9b4da0a8743f4171a8d260dfe88f0f51/FLAG75c8c248c [2021-11-23 02:42:33,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/data/7432f88c1/9b4da0a8743f4171a8d260dfe88f0f51 [2021-11-23 02:42:33,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:42:33,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:42:33,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:42:33,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:42:33,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:42:33,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:33" (1/1) ... [2021-11-23 02:42:33,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79999df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:33, skipping insertion in model container [2021-11-23 02:42:33,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:33" (1/1) ... [2021-11-23 02:42:33,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:42:33,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:42:33,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:42:34,005 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:42:34,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:42:34,082 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:42:34,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34 WrapperNode [2021-11-23 02:42:34,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:42:34,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:42:34,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:42:34,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:42:34,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,144 INFO L137 Inliner]: procedures = 123, calls = 49, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 149 [2021-11-23 02:42:34,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:42:34,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:42:34,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:42:34,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:42:34,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:42:34,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:42:34,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:42:34,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:42:34,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (1/1) ... [2021-11-23 02:42:34,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:42:34,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:42:34,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:42:34,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:42:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:42:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:42:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:42:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:42:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:42:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:42:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:42:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:42:34,373 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:42:34,374 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:42:34,904 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:42:35,000 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:42:35,000 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 02:42:35,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:35 BoogieIcfgContainer [2021-11-23 02:42:35,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:42:35,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:42:35,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:42:35,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:42:35,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:42:33" (1/3) ... [2021-11-23 02:42:35,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451ce19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:35, skipping insertion in model container [2021-11-23 02:42:35,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:34" (2/3) ... [2021-11-23 02:42:35,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451ce19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:35, skipping insertion in model container [2021-11-23 02:42:35,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:35" (3/3) ... [2021-11-23 02:42:35,015 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_parent_ptr.i [2021-11-23 02:42:35,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:42:35,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-11-23 02:42:35,065 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:42:35,073 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 02:42:35,073 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-11-23 02:42:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 54 states have (on average 2.6296296296296298) internal successors, (142), 131 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 02:42:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-23 02:42:35,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:35,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-23 02:42:35,118 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash 8250, now seen corresponding path program 1 times [2021-11-23 02:42:35,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:35,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663788059] [2021-11-23 02:42:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:35,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:35,316 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 02:42:35,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:35,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663788059] [2021-11-23 02:42:35,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663788059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:35,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:35,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:42:35,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581533815] [2021-11-23 02:42:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:35,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:35,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:35,357 INFO L87 Difference]: Start difference. First operand has 132 states, 54 states have (on average 2.6296296296296298) internal successors, (142), 131 states have internal predecessors, (142), 0 states have call successors, (0), 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 02:42:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:35,527 INFO L93 Difference]: Finished difference Result 145 states and 153 transitions. [2021-11-23 02:42:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:35,530 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 02:42:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:35,540 INFO L225 Difference]: With dead ends: 145 [2021-11-23 02:42:35,540 INFO L226 Difference]: Without dead ends: 143 [2021-11-23 02:42:35,542 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 02:42:35,545 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 98 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:35,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 92 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-23 02:42:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2021-11-23 02:42:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 127 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 02:42:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2021-11-23 02:42:35,591 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 2 [2021-11-23 02:42:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:35,591 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2021-11-23 02:42:35,591 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 02:42:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2021-11-23 02:42:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-23 02:42:35,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:35,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-23 02:42:35,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:42:35,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash 8251, now seen corresponding path program 1 times [2021-11-23 02:42:35,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:35,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755368055] [2021-11-23 02:42:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:35,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:35,638 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 02:42:35,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:35,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755368055] [2021-11-23 02:42:35,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755368055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:35,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:35,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:42:35,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334121973] [2021-11-23 02:42:35,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:35,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:35,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:35,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:35,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:35,643 INFO L87 Difference]: Start difference. First operand 128 states and 136 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 02:42:35,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:35,775 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2021-11-23 02:42:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:35,776 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 02:42:35,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:35,781 INFO L225 Difference]: With dead ends: 125 [2021-11-23 02:42:35,781 INFO L226 Difference]: Without dead ends: 125 [2021-11-23 02:42:35,782 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 02:42:35,789 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 74 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:35,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 108 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:35,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-23 02:42:35,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-23 02:42:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 54 states have (on average 2.462962962962963) internal successors, (133), 124 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 02:42:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-11-23 02:42:35,816 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 2 [2021-11-23 02:42:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:35,817 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-11-23 02:42:35,817 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 02:42:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-11-23 02:42:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:42:35,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:35,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:35,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:42:35,823 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash -55509382, now seen corresponding path program 1 times [2021-11-23 02:42:35,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:35,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358540337] [2021-11-23 02:42:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:35,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:35,902 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 02:42:35,902 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:35,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358540337] [2021-11-23 02:42:35,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358540337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:35,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:35,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:35,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852239686] [2021-11-23 02:42:35,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:35,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:35,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:35,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:35,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:35,905 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:36,135 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2021-11-23 02:42:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:36,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:42:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:36,138 INFO L225 Difference]: With dead ends: 128 [2021-11-23 02:42:36,138 INFO L226 Difference]: Without dead ends: 128 [2021-11-23 02:42:36,138 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 02:42:36,146 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 155 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:36,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 65 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-23 02:42:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2021-11-23 02:42:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 108 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2021-11-23 02:42:36,163 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 7 [2021-11-23 02:42:36,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:36,163 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2021-11-23 02:42:36,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2021-11-23 02:42:36,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:42:36,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:36,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:36,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:42:36,164 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash -55509381, now seen corresponding path program 1 times [2021-11-23 02:42:36,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:36,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897848860] [2021-11-23 02:42:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:36,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:36,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:36,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897848860] [2021-11-23 02:42:36,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897848860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:36,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:36,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:42:36,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836378677] [2021-11-23 02:42:36,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:36,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:36,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:36,233 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 02:42:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:36,455 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2021-11-23 02:42:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 02:42:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:36,458 INFO L225 Difference]: With dead ends: 148 [2021-11-23 02:42:36,458 INFO L226 Difference]: Without dead ends: 148 [2021-11-23 02:42:36,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:36,460 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 135 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:36,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 123 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-23 02:42:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 132. [2021-11-23 02:42:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 78 states have (on average 1.9871794871794872) internal successors, (155), 131 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 02:42:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2021-11-23 02:42:36,471 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 7 [2021-11-23 02:42:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:36,472 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2021-11-23 02:42:36,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 02:42:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2021-11-23 02:42:36,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:42:36,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:36,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:36,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:42:36,473 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:36,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:36,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1720788895, now seen corresponding path program 1 times [2021-11-23 02:42:36,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:36,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340104507] [2021-11-23 02:42:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:36,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:36,547 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 02:42:36,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:36,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340104507] [2021-11-23 02:42:36,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340104507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:36,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:36,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:42:36,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415835893] [2021-11-23 02:42:36,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:36,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:36,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:36,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:36,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:36,550 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:36,643 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2021-11-23 02:42:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 02:42:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:36,645 INFO L225 Difference]: With dead ends: 151 [2021-11-23 02:42:36,645 INFO L226 Difference]: Without dead ends: 151 [2021-11-23 02:42:36,645 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 02:42:36,646 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 22 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:36,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 146 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-23 02:42:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 132. [2021-11-23 02:42:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 80 states have (on average 1.9625) internal successors, (157), 131 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 02:42:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2021-11-23 02:42:36,653 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 8 [2021-11-23 02:42:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:36,654 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2021-11-23 02:42:36,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2021-11-23 02:42:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:42:36,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:36,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:36,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:42:36,656 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:36,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:36,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1720788894, now seen corresponding path program 1 times [2021-11-23 02:42:36,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:36,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598718937] [2021-11-23 02:42:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:36,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:36,696 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 02:42:36,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:36,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598718937] [2021-11-23 02:42:36,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598718937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:36,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:36,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:42:36,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976243433] [2021-11-23 02:42:36,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:36,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:36,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:36,699 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:36,810 INFO L93 Difference]: Finished difference Result 132 states and 155 transitions. [2021-11-23 02:42:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 02:42:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:36,812 INFO L225 Difference]: With dead ends: 132 [2021-11-23 02:42:36,812 INFO L226 Difference]: Without dead ends: 132 [2021-11-23 02:42:36,812 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 02:42:36,813 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 5 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:36,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 127 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-23 02:42:36,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-11-23 02:42:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.925) internal successors, (154), 129 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 02:42:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2021-11-23 02:42:36,819 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 8 [2021-11-23 02:42:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:36,819 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2021-11-23 02:42:36,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2021-11-23 02:42:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:42:36,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:36,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:36,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:42:36,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash 707797407, now seen corresponding path program 1 times [2021-11-23 02:42:36,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:36,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444679102] [2021-11-23 02:42:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:36,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:36,858 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 02:42:36,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:36,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444679102] [2021-11-23 02:42:36,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444679102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:36,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:36,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:36,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107374388] [2021-11-23 02:42:36,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:36,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:36,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:36,860 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 02:42:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:36,910 INFO L93 Difference]: Finished difference Result 130 states and 153 transitions. [2021-11-23 02:42:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:36,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 02:42:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:36,911 INFO L225 Difference]: With dead ends: 130 [2021-11-23 02:42:36,911 INFO L226 Difference]: Without dead ends: 130 [2021-11-23 02:42:36,912 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 02:42:36,912 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 1 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:36,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 173 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:42:36,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-23 02:42:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-23 02:42:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.9125) internal successors, (153), 129 states have internal predecessors, (153), 0 states have call successors, (0), 0 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 02:42:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2021-11-23 02:42:36,919 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 11 [2021-11-23 02:42:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:36,919 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2021-11-23 02:42:36,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 02:42:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2021-11-23 02:42:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:42:36,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:36,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:36,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:42:36,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 466799326, now seen corresponding path program 1 times [2021-11-23 02:42:36,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:36,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871117679] [2021-11-23 02:42:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:36,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:37,025 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 02:42:37,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:37,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871117679] [2021-11-23 02:42:37,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871117679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:37,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:37,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:37,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270068055] [2021-11-23 02:42:37,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:37,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:37,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:37,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:37,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:37,027 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 02:42:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:37,191 INFO L93 Difference]: Finished difference Result 141 states and 165 transitions. [2021-11-23 02:42:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:37,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 02:42:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:37,192 INFO L225 Difference]: With dead ends: 141 [2021-11-23 02:42:37,193 INFO L226 Difference]: Without dead ends: 141 [2021-11-23 02:42:37,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:37,194 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 29 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:37,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 205 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:37,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-23 02:42:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 126. [2021-11-23 02:42:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 81 states have (on average 1.8518518518518519) internal successors, (150), 125 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 02:42:37,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2021-11-23 02:42:37,198 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 12 [2021-11-23 02:42:37,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:37,198 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2021-11-23 02:42:37,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 02:42:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2021-11-23 02:42:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:42:37,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:37,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:37,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:42:37,199 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash 466799327, now seen corresponding path program 1 times [2021-11-23 02:42:37,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:37,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299667753] [2021-11-23 02:42:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:37,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:37,294 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 02:42:37,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:37,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299667753] [2021-11-23 02:42:37,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299667753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:37,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:37,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:37,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569352882] [2021-11-23 02:42:37,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:37,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:42:37,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:42:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:42:37,297 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 02:42:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:37,472 INFO L93 Difference]: Finished difference Result 160 states and 186 transitions. [2021-11-23 02:42:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:42:37,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 02:42:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:37,473 INFO L225 Difference]: With dead ends: 160 [2021-11-23 02:42:37,473 INFO L226 Difference]: Without dead ends: 160 [2021-11-23 02:42:37,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:37,475 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 58 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:37,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 163 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-23 02:42:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2021-11-23 02:42:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 90 states have (on average 1.788888888888889) internal successors, (161), 130 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 02:42:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 161 transitions. [2021-11-23 02:42:37,479 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 161 transitions. Word has length 12 [2021-11-23 02:42:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:37,480 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 161 transitions. [2021-11-23 02:42:37,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 02:42:37,480 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 161 transitions. [2021-11-23 02:42:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:42:37,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:37,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:37,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:42:37,481 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:37,481 INFO L85 PathProgramCache]: Analyzing trace with hash 189549906, now seen corresponding path program 1 times [2021-11-23 02:42:37,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:37,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155766280] [2021-11-23 02:42:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:37,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:37,504 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 02:42:37,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:37,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155766280] [2021-11-23 02:42:37,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155766280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:37,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:37,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:37,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438881757] [2021-11-23 02:42:37,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:37,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:37,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:37,506 INFO L87 Difference]: Start difference. First operand 131 states and 161 transitions. Second operand has 3 states, 3 states have (on average 4.0) 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 02:42:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:37,545 INFO L93 Difference]: Finished difference Result 133 states and 163 transitions. [2021-11-23 02:42:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) 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 02:42:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:37,546 INFO L225 Difference]: With dead ends: 133 [2021-11-23 02:42:37,547 INFO L226 Difference]: Without dead ends: 133 [2021-11-23 02:42:37,547 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 02:42:37,548 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:37,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:42:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-23 02:42:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-23 02:42:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 92 states have (on average 1.7717391304347827) internal successors, (163), 132 states have internal predecessors, (163), 0 states have call successors, (0), 0 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 02:42:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2021-11-23 02:42:37,552 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 12 [2021-11-23 02:42:37,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:37,552 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2021-11-23 02:42:37,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) 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 02:42:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2021-11-23 02:42:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:42:37,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:37,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:37,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:42:37,554 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:37,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1595411210, now seen corresponding path program 1 times [2021-11-23 02:42:37,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:37,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165597323] [2021-11-23 02:42:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:37,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:37,624 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 02:42:37,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:37,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165597323] [2021-11-23 02:42:37,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165597323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:37,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:37,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:37,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144713283] [2021-11-23 02:42:37,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:37,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:37,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:37,626 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:37,804 INFO L93 Difference]: Finished difference Result 162 states and 196 transitions. [2021-11-23 02:42:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:42:37,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:42:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:37,806 INFO L225 Difference]: With dead ends: 162 [2021-11-23 02:42:37,806 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 02:42:37,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:42:37,807 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 31 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:37,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 252 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 02:42:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2021-11-23 02:42:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 101 states have (on average 1.7326732673267327) internal successors, (175), 141 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 02:42:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 175 transitions. [2021-11-23 02:42:37,812 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 175 transitions. Word has length 13 [2021-11-23 02:42:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:37,812 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 175 transitions. [2021-11-23 02:42:37,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 175 transitions. [2021-11-23 02:42:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:42:37,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:37,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:37,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:42:37,813 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:37,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:37,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1917631082, now seen corresponding path program 1 times [2021-11-23 02:42:37,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:37,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125548518] [2021-11-23 02:42:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:37,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:37,894 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 02:42:37,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:37,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125548518] [2021-11-23 02:42:37,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125548518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:37,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:37,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:37,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390201826] [2021-11-23 02:42:37,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:37,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:37,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:37,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:37,897 INFO L87 Difference]: Start difference. First operand 142 states and 175 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:38,000 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2021-11-23 02:42:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:42:38,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:38,003 INFO L225 Difference]: With dead ends: 154 [2021-11-23 02:42:38,003 INFO L226 Difference]: Without dead ends: 154 [2021-11-23 02:42:38,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:42:38,005 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 49 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:38,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 201 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-23 02:42:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 143. [2021-11-23 02:42:38,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 102 states have (on average 1.7254901960784315) internal successors, (176), 142 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 02:42:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 176 transitions. [2021-11-23 02:42:38,014 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 176 transitions. Word has length 14 [2021-11-23 02:42:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:38,014 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 176 transitions. [2021-11-23 02:42:38,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 176 transitions. [2021-11-23 02:42:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:42:38,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:38,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:38,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:42:38,016 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:38,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1892344447, now seen corresponding path program 1 times [2021-11-23 02:42:38,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:38,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850671252] [2021-11-23 02:42:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:38,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:38,104 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 02:42:38,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:38,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850671252] [2021-11-23 02:42:38,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850671252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:38,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:38,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:38,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988544425] [2021-11-23 02:42:38,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:38,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:38,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:38,107 INFO L87 Difference]: Start difference. First operand 143 states and 176 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:38,282 INFO L93 Difference]: Finished difference Result 142 states and 174 transitions. [2021-11-23 02:42:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:38,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:38,284 INFO L225 Difference]: With dead ends: 142 [2021-11-23 02:42:38,284 INFO L226 Difference]: Without dead ends: 142 [2021-11-23 02:42:38,284 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 02:42:38,285 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 5 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:38,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 194 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-23 02:42:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-23 02:42:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 141 states have internal predecessors, (174), 0 states have call successors, (0), 0 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 02:42:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 174 transitions. [2021-11-23 02:42:38,291 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 174 transitions. Word has length 14 [2021-11-23 02:42:38,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:38,291 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 174 transitions. [2021-11-23 02:42:38,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 174 transitions. [2021-11-23 02:42:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:42:38,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:38,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:38,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:42:38,296 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:38,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1892344448, now seen corresponding path program 1 times [2021-11-23 02:42:38,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:38,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980758307] [2021-11-23 02:42:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:38,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:38,369 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 02:42:38,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:38,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980758307] [2021-11-23 02:42:38,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980758307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:38,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:38,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:38,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513368194] [2021-11-23 02:42:38,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:38,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:38,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:38,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:38,372 INFO L87 Difference]: Start difference. First operand 142 states and 174 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:38,548 INFO L93 Difference]: Finished difference Result 141 states and 172 transitions. [2021-11-23 02:42:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:38,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:38,549 INFO L225 Difference]: With dead ends: 141 [2021-11-23 02:42:38,549 INFO L226 Difference]: Without dead ends: 141 [2021-11-23 02:42:38,550 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 02:42:38,550 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:38,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 172 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-23 02:42:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-23 02:42:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 102 states have (on average 1.6862745098039216) internal successors, (172), 140 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 02:42:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-11-23 02:42:38,555 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 14 [2021-11-23 02:42:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:38,555 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-11-23 02:42:38,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 02:42:38,556 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-11-23 02:42:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:42:38,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:38,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:38,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:42:38,557 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash 302506413, now seen corresponding path program 1 times [2021-11-23 02:42:38,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:38,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097799369] [2021-11-23 02:42:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:38,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:38,712 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 02:42:38,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:38,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097799369] [2021-11-23 02:42:38,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097799369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:38,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:38,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 02:42:38,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398927098] [2021-11-23 02:42:38,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:38,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:42:38,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:38,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:42:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:42:38,714 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:39,186 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2021-11-23 02:42:39,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:42:39,187 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 02:42:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:39,188 INFO L225 Difference]: With dead ends: 161 [2021-11-23 02:42:39,189 INFO L226 Difference]: Without dead ends: 161 [2021-11-23 02:42:39,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:42:39,190 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 243 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:39,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 162 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:42:39,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-23 02:42:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 145. [2021-11-23 02:42:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 106 states have (on average 1.669811320754717) internal successors, (177), 144 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 02:42:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 177 transitions. [2021-11-23 02:42:39,198 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 177 transitions. Word has length 16 [2021-11-23 02:42:39,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:39,199 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 177 transitions. [2021-11-23 02:42:39,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 177 transitions. [2021-11-23 02:42:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:42:39,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:39,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:39,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:42:39,200 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr58REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash 302506414, now seen corresponding path program 1 times [2021-11-23 02:42:39,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:39,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695360991] [2021-11-23 02:42:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:39,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:39,377 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 02:42:39,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:39,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695360991] [2021-11-23 02:42:39,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695360991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:39,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:39,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:42:39,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692014370] [2021-11-23 02:42:39,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:39,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:42:39,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:42:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:42:39,382 INFO L87 Difference]: Start difference. First operand 145 states and 177 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:39,973 INFO L93 Difference]: Finished difference Result 203 states and 232 transitions. [2021-11-23 02:42:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:42:39,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 02:42:39,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:39,974 INFO L225 Difference]: With dead ends: 203 [2021-11-23 02:42:39,975 INFO L226 Difference]: Without dead ends: 203 [2021-11-23 02:42:39,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:42:39,976 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 320 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:39,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 181 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:42:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-23 02:42:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 149. [2021-11-23 02:42:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 110 states have (on average 1.6545454545454545) internal successors, (182), 148 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 02:42:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 182 transitions. [2021-11-23 02:42:39,981 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 182 transitions. Word has length 16 [2021-11-23 02:42:39,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:39,982 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 182 transitions. [2021-11-23 02:42:39,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 182 transitions. [2021-11-23 02:42:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:42:39,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:39,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:39,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 02:42:39,983 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1736905656, now seen corresponding path program 1 times [2021-11-23 02:42:39,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:39,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840881453] [2021-11-23 02:42:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:39,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:40,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:40,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840881453] [2021-11-23 02:42:40,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840881453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:40,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:40,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:40,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825449070] [2021-11-23 02:42:40,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:40,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:40,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:40,021 INFO L87 Difference]: Start difference. First operand 149 states and 182 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:40,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:40,170 INFO L93 Difference]: Finished difference Result 148 states and 180 transitions. [2021-11-23 02:42:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:40,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 02:42:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:40,171 INFO L225 Difference]: With dead ends: 148 [2021-11-23 02:42:40,171 INFO L226 Difference]: Without dead ends: 148 [2021-11-23 02:42:40,172 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 02:42:40,172 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 5 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:40,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 189 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-23 02:42:40,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-23 02:42:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 110 states have (on average 1.6363636363636365) internal successors, (180), 147 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 02:42:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 180 transitions. [2021-11-23 02:42:40,177 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 180 transitions. Word has length 16 [2021-11-23 02:42:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:40,177 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 180 transitions. [2021-11-23 02:42:40,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 180 transitions. [2021-11-23 02:42:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:42:40,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:40,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:40,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 02:42:40,178 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1736905655, now seen corresponding path program 1 times [2021-11-23 02:42:40,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:40,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20027475] [2021-11-23 02:42:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:40,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:40,234 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 02:42:40,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:40,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20027475] [2021-11-23 02:42:40,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20027475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:40,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:40,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:40,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020236812] [2021-11-23 02:42:40,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:40,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:40,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:40,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:40,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:40,236 INFO L87 Difference]: Start difference. First operand 148 states and 180 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:40,400 INFO L93 Difference]: Finished difference Result 147 states and 178 transitions. [2021-11-23 02:42:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:40,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 02:42:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:40,402 INFO L225 Difference]: With dead ends: 147 [2021-11-23 02:42:40,402 INFO L226 Difference]: Without dead ends: 147 [2021-11-23 02:42:40,402 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 02:42:40,403 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 3 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:40,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 167 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-23 02:42:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-23 02:42:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 110 states have (on average 1.6181818181818182) internal successors, (178), 146 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 02:42:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 178 transitions. [2021-11-23 02:42:40,407 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 178 transitions. Word has length 16 [2021-11-23 02:42:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:40,407 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 178 transitions. [2021-11-23 02:42:40,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 178 transitions. [2021-11-23 02:42:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:42:40,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:40,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:40,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 02:42:40,409 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1771999070, now seen corresponding path program 1 times [2021-11-23 02:42:40,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:40,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696624855] [2021-11-23 02:42:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:40,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:40,480 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 02:42:40,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:40,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696624855] [2021-11-23 02:42:40,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696624855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:40,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:40,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:42:40,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907262401] [2021-11-23 02:42:40,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:40,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:42:40,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:42:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:40,483 INFO L87 Difference]: Start difference. First operand 147 states and 178 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:40,755 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2021-11-23 02:42:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:42:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 02:42:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:40,757 INFO L225 Difference]: With dead ends: 149 [2021-11-23 02:42:40,757 INFO L226 Difference]: Without dead ends: 149 [2021-11-23 02:42:40,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:42:40,758 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 69 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:40,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 156 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-23 02:42:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-11-23 02:42:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 110 states have (on average 1.6) internal successors, (176), 145 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 02:42:40,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 176 transitions. [2021-11-23 02:42:40,763 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 176 transitions. Word has length 16 [2021-11-23 02:42:40,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:40,764 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 176 transitions. [2021-11-23 02:42:40,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:40,764 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 176 transitions. [2021-11-23 02:42:40,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:42:40,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:40,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:40,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 02:42:40,765 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1771999071, now seen corresponding path program 1 times [2021-11-23 02:42:40,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:40,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948717183] [2021-11-23 02:42:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:40,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:40,882 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 02:42:40,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:40,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948717183] [2021-11-23 02:42:40,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948717183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:40,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:40,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:42:40,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59470427] [2021-11-23 02:42:40,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:40,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:42:40,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:40,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:42:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:40,884 INFO L87 Difference]: Start difference. First operand 146 states and 176 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:41,158 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2021-11-23 02:42:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:42:41,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 02:42:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:41,160 INFO L225 Difference]: With dead ends: 148 [2021-11-23 02:42:41,160 INFO L226 Difference]: Without dead ends: 148 [2021-11-23 02:42:41,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:42:41,161 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 65 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:41,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 129 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-23 02:42:41,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2021-11-23 02:42:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 110 states have (on average 1.5818181818181818) internal successors, (174), 144 states have internal predecessors, (174), 0 states have call successors, (0), 0 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 02:42:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 174 transitions. [2021-11-23 02:42:41,165 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 174 transitions. Word has length 16 [2021-11-23 02:42:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:41,165 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 174 transitions. [2021-11-23 02:42:41,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:41,166 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 174 transitions. [2021-11-23 02:42:41,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:42:41,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:41,166 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 02:42:41,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 02:42:41,166 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:41,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1576059233, now seen corresponding path program 1 times [2021-11-23 02:42:41,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:41,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605064033] [2021-11-23 02:42:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:41,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:41,244 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 02:42:41,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:41,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605064033] [2021-11-23 02:42:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605064033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:41,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:42:41,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977325940] [2021-11-23 02:42:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:41,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:42:41,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:42:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:41,247 INFO L87 Difference]: Start difference. First operand 145 states and 174 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 02:42:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:41,542 INFO L93 Difference]: Finished difference Result 147 states and 176 transitions. [2021-11-23 02:42:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:42:41,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 02:42:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:41,544 INFO L225 Difference]: With dead ends: 147 [2021-11-23 02:42:41,544 INFO L226 Difference]: Without dead ends: 147 [2021-11-23 02:42:41,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:42:41,545 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 60 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:41,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 151 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:41,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-23 02:42:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2021-11-23 02:42:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 110 states have (on average 1.5636363636363637) internal successors, (172), 143 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 02:42:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2021-11-23 02:42:41,548 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 18 [2021-11-23 02:42:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:41,549 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2021-11-23 02:42:41,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 02:42:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2021-11-23 02:42:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:42:41,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:41,549 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 02:42:41,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 02:42:41,550 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1576059234, now seen corresponding path program 1 times [2021-11-23 02:42:41,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:41,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319546336] [2021-11-23 02:42:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:41,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:41,708 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 02:42:41,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:41,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319546336] [2021-11-23 02:42:41,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319546336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:41,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:41,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:42:41,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217665563] [2021-11-23 02:42:41,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:41,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:42:41,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:42:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:41,711 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 02:42:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:41,975 INFO L93 Difference]: Finished difference Result 146 states and 174 transitions. [2021-11-23 02:42:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:42:41,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 02:42:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:41,978 INFO L225 Difference]: With dead ends: 146 [2021-11-23 02:42:41,978 INFO L226 Difference]: Without dead ends: 146 [2021-11-23 02:42:41,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:42:41,979 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 61 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:41,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 128 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-23 02:42:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2021-11-23 02:42:41,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 110 states have (on average 1.5454545454545454) internal successors, (170), 142 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 02:42:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2021-11-23 02:42:41,984 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 18 [2021-11-23 02:42:41,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:41,984 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2021-11-23 02:42:41,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 02:42:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2021-11-23 02:42:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:42:41,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:41,986 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 02:42:41,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 02:42:41,986 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2084206106, now seen corresponding path program 1 times [2021-11-23 02:42:41,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:41,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939446337] [2021-11-23 02:42:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:41,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:42,091 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 02:42:42,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:42,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939446337] [2021-11-23 02:42:42,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939446337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:42,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:42,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:42:42,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601604786] [2021-11-23 02:42:42,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:42,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:42:42,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:42:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:42:42,094 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 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 02:42:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:42,407 INFO L93 Difference]: Finished difference Result 161 states and 191 transitions. [2021-11-23 02:42:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:42:42,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 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 02:42:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:42,409 INFO L225 Difference]: With dead ends: 161 [2021-11-23 02:42:42,409 INFO L226 Difference]: Without dead ends: 161 [2021-11-23 02:42:42,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-23 02:42:42,410 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:42,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 166 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:42:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-23 02:42:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 142. [2021-11-23 02:42:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 110 states have (on average 1.5272727272727273) internal successors, (168), 141 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 02:42:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 168 transitions. [2021-11-23 02:42:42,415 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 168 transitions. Word has length 18 [2021-11-23 02:42:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:42,415 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 168 transitions. [2021-11-23 02:42:42,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 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 02:42:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 168 transitions. [2021-11-23 02:42:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:42:42,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:42,416 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 02:42:42,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 02:42:42,416 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:42,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2084206107, now seen corresponding path program 1 times [2021-11-23 02:42:42,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:42,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698720290] [2021-11-23 02:42:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:42,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:42,545 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 02:42:42,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:42,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698720290] [2021-11-23 02:42:42,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698720290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:42,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:42,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:42:42,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373410839] [2021-11-23 02:42:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:42,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:42:42,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:42:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:42:42,547 INFO L87 Difference]: Start difference. First operand 142 states and 168 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 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 02:42:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:42,905 INFO L93 Difference]: Finished difference Result 144 states and 170 transitions. [2021-11-23 02:42:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:42:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 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 02:42:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:42,906 INFO L225 Difference]: With dead ends: 144 [2021-11-23 02:42:42,906 INFO L226 Difference]: Without dead ends: 144 [2021-11-23 02:42:42,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:42:42,907 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 58 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:42,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 196 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:42:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-23 02:42:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2021-11-23 02:42:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 110 states have (on average 1.509090909090909) internal successors, (166), 140 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:42:42,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2021-11-23 02:42:42,912 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 18 [2021-11-23 02:42:42,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:42,912 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2021-11-23 02:42:42,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 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 02:42:42,912 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2021-11-23 02:42:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:42:42,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:42,913 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 02:42:42,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 02:42:42,913 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1127313647, now seen corresponding path program 1 times [2021-11-23 02:42:42,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:42,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26900952] [2021-11-23 02:42:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:42,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:42,955 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 02:42:42,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:42,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26900952] [2021-11-23 02:42:42,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26900952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:42,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:42,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:42,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851940376] [2021-11-23 02:42:42,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:42,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:42,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:42,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:42,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:42,958 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 02:42:43,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:43,071 INFO L93 Difference]: Finished difference Result 137 states and 163 transitions. [2021-11-23 02:42:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:43,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 02:42:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:43,072 INFO L225 Difference]: With dead ends: 137 [2021-11-23 02:42:43,072 INFO L226 Difference]: Without dead ends: 137 [2021-11-23 02:42:43,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:43,073 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 59 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:43,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 53 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-23 02:42:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2021-11-23 02:42:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 132 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 02:42:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 158 transitions. [2021-11-23 02:42:43,077 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 158 transitions. Word has length 19 [2021-11-23 02:42:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:43,078 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 158 transitions. [2021-11-23 02:42:43,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 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 02:42:43,078 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 158 transitions. [2021-11-23 02:42:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:42:43,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:43,079 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 02:42:43,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 02:42:43,079 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:43,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:43,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1530430261, now seen corresponding path program 1 times [2021-11-23 02:42:43,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:43,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222191141] [2021-11-23 02:42:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:43,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:43,181 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 02:42:43,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:43,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222191141] [2021-11-23 02:42:43,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222191141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:43,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:43,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:42:43,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126249031] [2021-11-23 02:42:43,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:43,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:42:43,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:42:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:42:43,185 INFO L87 Difference]: Start difference. First operand 133 states and 158 transitions. Second operand has 9 states, 8 states have (on average 2.5) 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 02:42:43,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:43,444 INFO L93 Difference]: Finished difference Result 138 states and 165 transitions. [2021-11-23 02:42:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:42:43,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) 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 02:42:43,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:43,445 INFO L225 Difference]: With dead ends: 138 [2021-11-23 02:42:43,445 INFO L226 Difference]: Without dead ends: 138 [2021-11-23 02:42:43,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:42:43,446 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 57 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:43,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 164 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:42:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-23 02:42:43,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2021-11-23 02:42:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 109 states have (on average 1.4403669724770642) internal successors, (157), 131 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 02:42:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2021-11-23 02:42:43,450 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 20 [2021-11-23 02:42:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:43,450 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2021-11-23 02:42:43,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) 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 02:42:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2021-11-23 02:42:43,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:42:43,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:43,451 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 02:42:43,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 02:42:43,451 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1530430260, now seen corresponding path program 1 times [2021-11-23 02:42:43,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:43,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263646918] [2021-11-23 02:42:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:43,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:43,622 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 02:42:43,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:43,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263646918] [2021-11-23 02:42:43,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263646918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:43,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:43,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:42:43,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651023913] [2021-11-23 02:42:43,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:43,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:42:43,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:43,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:42:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:42:43,624 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 9 states, 8 states have (on average 2.5) 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 02:42:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:43,972 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2021-11-23 02:42:43,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:42:43,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) 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 02:42:43,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:43,974 INFO L225 Difference]: With dead ends: 134 [2021-11-23 02:42:43,974 INFO L226 Difference]: Without dead ends: 134 [2021-11-23 02:42:43,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:42:43,975 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 47 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:43,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 195 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:42:43,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-23 02:42:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2021-11-23 02:42:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 109 states have (on average 1.4311926605504588) internal successors, (156), 130 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 02:42:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2021-11-23 02:42:43,979 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 20 [2021-11-23 02:42:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:43,979 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2021-11-23 02:42:43,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) 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 02:42:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2021-11-23 02:42:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:42:43,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:43,980 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 02:42:43,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 02:42:43,981 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1028156648, now seen corresponding path program 1 times [2021-11-23 02:42:43,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:43,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587803672] [2021-11-23 02:42:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:43,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:44,097 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 02:42:44,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:44,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587803672] [2021-11-23 02:42:44,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587803672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:44,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:44,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:42:44,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514007791] [2021-11-23 02:42:44,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:44,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:42:44,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:44,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:42:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:42:44,100 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 02:42:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:44,527 INFO L93 Difference]: Finished difference Result 168 states and 196 transitions. [2021-11-23 02:42:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:42:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 02:42:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:44,528 INFO L225 Difference]: With dead ends: 168 [2021-11-23 02:42:44,528 INFO L226 Difference]: Without dead ends: 168 [2021-11-23 02:42:44,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:42:44,529 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 239 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:44,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 179 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:42:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-23 02:42:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 142. [2021-11-23 02:42:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.425) internal successors, (171), 141 states have internal predecessors, (171), 0 states have call successors, (0), 0 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 02:42:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2021-11-23 02:42:44,534 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 21 [2021-11-23 02:42:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:44,534 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2021-11-23 02:42:44,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 02:42:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2021-11-23 02:42:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:42:44,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:44,535 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 02:42:44,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 02:42:44,535 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:44,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1028144672, now seen corresponding path program 1 times [2021-11-23 02:42:44,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:44,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710535439] [2021-11-23 02:42:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:44,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:44,587 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 02:42:44,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:44,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710535439] [2021-11-23 02:42:44,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710535439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:44,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:44,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:44,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481988516] [2021-11-23 02:42:44,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:44,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:44,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:44,590 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand has 5 states, 4 states have (on average 5.25) 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 02:42:44,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:44,720 INFO L93 Difference]: Finished difference Result 159 states and 190 transitions. [2021-11-23 02:42:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:44,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) 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 02:42:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:44,722 INFO L225 Difference]: With dead ends: 159 [2021-11-23 02:42:44,722 INFO L226 Difference]: Without dead ends: 159 [2021-11-23 02:42:44,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:44,723 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 111 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:44,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 60 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:42:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-23 02:42:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2021-11-23 02:42:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 1.3727272727272728) internal successors, (151), 125 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 02:42:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2021-11-23 02:42:44,727 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 21 [2021-11-23 02:42:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:44,727 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2021-11-23 02:42:44,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) 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 02:42:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2021-11-23 02:42:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:42:44,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:44,727 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 02:42:44,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 02:42:44,728 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1016661767, now seen corresponding path program 1 times [2021-11-23 02:42:44,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:44,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054169232] [2021-11-23 02:42:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:44,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:44,983 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 02:42:44,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:44,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054169232] [2021-11-23 02:42:44,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054169232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:44,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:44,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:42:44,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235268112] [2021-11-23 02:42:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:44,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:42:44,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:42:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:42:44,985 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 02:42:45,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:45,650 INFO L93 Difference]: Finished difference Result 169 states and 200 transitions. [2021-11-23 02:42:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:42:45,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 02:42:45,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:45,652 INFO L225 Difference]: With dead ends: 169 [2021-11-23 02:42:45,652 INFO L226 Difference]: Without dead ends: 169 [2021-11-23 02:42:45,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:42:45,654 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 255 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:45,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 147 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:42:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-23 02:42:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 126. [2021-11-23 02:42:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 1.3545454545454545) internal successors, (149), 125 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 02:42:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 149 transitions. [2021-11-23 02:42:45,658 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 149 transitions. Word has length 21 [2021-11-23 02:42:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:45,658 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 149 transitions. [2021-11-23 02:42:45,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 02:42:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 149 transitions. [2021-11-23 02:42:45,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:42:45,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:45,659 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:45,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 02:42:45,660 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1891808107, now seen corresponding path program 1 times [2021-11-23 02:42:45,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:45,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595343981] [2021-11-23 02:42:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:45,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:45,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:45,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595343981] [2021-11-23 02:42:45,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595343981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:42:45,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380898364] [2021-11-23 02:42:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:45,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:45,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:42:45,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:42:45,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:42:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:45,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:42:45,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:45,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 02:42:45,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:42:45,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-23 02:42:45,989 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 02:42:45,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2021-11-23 02:42:46,002 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-23 02:42:46,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-23 02:42:46,045 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 39 treesize of output 35 [2021-11-23 02:42:46,050 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 35 treesize of output 31 [2021-11-23 02:42:46,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-23 02:42:46,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-11-23 02:42:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:46,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:46,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380898364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:42:46,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1932834716] [2021-11-23 02:42:46,300 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-23 02:42:46,300 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:42:46,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:42:46,311 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:42:46,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:42:46,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,398 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 02:42:46,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,424 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 02:42:46,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:42:46,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:42:46,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,473 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 02:42:46,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,483 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 02:42:46,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,493 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 02:42:46,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,521 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 02:42:46,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 02:42:46,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,545 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 02:42:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,596 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 02:42:46,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,637 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 02:42:46,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-23 02:42:46,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-23 02:42:46,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-23 02:42:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-23 02:42:46,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:46,755 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 02:42:47,946 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:42:51,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1932834716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:51,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:42:51,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [4, 4, 4] total 18 [2021-11-23 02:42:51,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884933657] [2021-11-23 02:42:51,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:51,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:42:51,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:42:51,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:42:51,666 INFO L87 Difference]: Start difference. First operand 126 states and 149 transitions. Second operand has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 02:42:52,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:52,890 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2021-11-23 02:42:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:42:52,891 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 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 02:42:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:52,891 INFO L225 Difference]: With dead ends: 156 [2021-11-23 02:42:52,891 INFO L226 Difference]: Without dead ends: 156 [2021-11-23 02:42:52,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 45 SyntacticMatches, 14 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:42:52,892 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:52,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 113 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:42:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-23 02:42:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2021-11-23 02:42:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 127 states have (on average 1.31496062992126) internal successors, (167), 142 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 02:42:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2021-11-23 02:42:52,897 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 24 [2021-11-23 02:42:52,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:52,897 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2021-11-23 02:42:52,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 02:42:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2021-11-23 02:42:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:42:52,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:52,898 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 02:42:52,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:42:53,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:53,120 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:42:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1891805317, now seen corresponding path program 1 times [2021-11-23 02:42:53,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:53,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467102614] [2021-11-23 02:42:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:53,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:53,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:53,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467102614] [2021-11-23 02:42:53,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467102614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:42:53,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470589975] [2021-11-23 02:42:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:53,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:53,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:42:53,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:42:53,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:42:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:53,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 02:42:53,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:53,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 02:42:53,644 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:42:53,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-23 02:42:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:53,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:42:54,188 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 41 treesize of output 37 [2021-11-23 02:42:54,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-23 02:42:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:42:54,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470589975] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:42:54,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [769241587] [2021-11-23 02:42:54,995 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-23 02:42:54,995 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:42:54,995 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:42:54,996 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:42:54,996 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:42:55,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,028 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 02:42:55,047 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 02:42:55,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:42:55,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,061 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 30 treesize of output 21 [2021-11-23 02:42:55,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 02:42:55,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,091 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 02:42:55,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,099 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 02:42:55,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 02:42:55,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,130 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 02:42:55,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,140 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 02:42:55,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,190 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 02:42:55,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-23 02:42:55,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-23 02:42:55,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-23 02:42:55,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,290 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 02:42:55,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-23 02:42:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:42:55,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-23 02:42:56,977 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:43:02,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [769241587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:02,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:43:02,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [10, 8, 9] total 40 [2021-11-23 02:43:02,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783093082] [2021-11-23 02:43:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:02,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 02:43:02,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:02,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 02:43:02,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1453, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 02:43:02,131 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 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 02:43:03,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:03,267 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2021-11-23 02:43:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 02:43:03,267 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 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 02:43:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:03,268 INFO L225 Difference]: With dead ends: 144 [2021-11-23 02:43:03,269 INFO L226 Difference]: Without dead ends: 126 [2021-11-23 02:43:03,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=285, Invalid=1521, Unknown=0, NotChecked=0, Total=1806 [2021-11-23 02:43:03,270 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 35 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:03,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 114 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 02:43:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-23 02:43:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-11-23 02:43:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 1.3454545454545455) internal successors, (148), 125 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 02:43:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2021-11-23 02:43:03,274 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 24 [2021-11-23 02:43:03,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:03,275 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2021-11-23 02:43:03,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 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 02:43:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2021-11-23 02:43:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:43:03,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:03,275 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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 02:43:03,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 02:43:03,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:03,485 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:43:03,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash 654667581, now seen corresponding path program 1 times [2021-11-23 02:43:03,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:03,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295713539] [2021-11-23 02:43:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:03,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:03,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:03,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295713539] [2021-11-23 02:43:03,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295713539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:03,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056481136] [2021-11-23 02:43:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:03,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:03,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:03,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:03,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:43:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:03,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-23 02:43:03,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:04,127 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:43:04,128 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 02:43:04,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:04,188 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 25 treesize of output 24 [2021-11-23 02:43:04,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:04,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 02:43:04,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:04,331 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-11-23 02:43:04,331 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 80 treesize of output 61 [2021-11-23 02:43:04,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:04,350 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-23 02:43:04,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 66 [2021-11-23 02:43:04,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:04,536 INFO L354 Elim1Store]: treesize reduction 108, result has 18.2 percent of original size [2021-11-23 02:43:04,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 110 treesize of output 82 [2021-11-23 02:43:04,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:04,570 INFO L354 Elim1Store]: treesize reduction 150, result has 16.7 percent of original size [2021-11-23 02:43:04,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 100 treesize of output 99 [2021-11-23 02:43:08,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:08,843 INFO L354 Elim1Store]: treesize reduction 112, result has 22.2 percent of original size [2021-11-23 02:43:08,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 92 [2021-11-23 02:43:08,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:08,879 INFO L354 Elim1Store]: treesize reduction 160, result has 16.7 percent of original size [2021-11-23 02:43:08,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 109 [2021-11-23 02:43:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:09,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:25,140 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select (select (let ((.cse2 (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem23#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem23#1.base|) .cse2 0))) (.cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem23#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem23#1.base|) .cse2 0)) |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.offset|)))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem23#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem23#1.base|) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)))) (store .cse3 .cse4 (store (select .cse3 .cse4) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|)))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))) is different from false [2021-11-23 02:43:45,450 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:43:47,465 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base|) |ULTIMATE.start_main_#t~mem22#1.offset| 0))) (.cse5 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse5)) (.cse4 (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4))) (let ((.cse0 (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem22#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem22#1.base|) |ULTIMATE.start_main_#t~mem22#1.offset| 0)))) (store .cse6 .cse3 (store (select .cse6 .cse3) .cse4 0)))) (.cse1 (select (select (store .cse2 .cse3 (store (select .cse2 .cse3) .cse4 0)) |c_ULTIMATE.start_main_~n~0#1.base|) .cse5))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.offset|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select (select (let ((.cse9 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse7 (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base|) |ULTIMATE.start_main_#t~mem22#1.offset| 0)))) (let ((.cse11 (select (select .cse10 |c_ULTIMATE.start_main_~n~0#1.base|) .cse9))) (store .cse10 .cse11 (store (select .cse10 .cse11) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0)))))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~n~0#1.base|) .cse9))) (store .cse7 .cse8 (store (select .cse7 .cse8) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))) is different from false [2021-11-23 02:43:49,488 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select (select (let ((.cse5 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse5))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse7 (store (select |c_#memory_$Pointer$.base| .cse7) |ULTIMATE.start_main_#t~mem22#1.offset| 0)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse5)) (.cse4 (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4))) (let ((.cse0 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse7 (store (select |c_#memory_$Pointer$.offset| .cse7) |ULTIMATE.start_main_#t~mem22#1.offset| 0)))) (store .cse6 .cse3 (store (select .cse6 .cse3) .cse4 0)))) (.cse1 (select (select (store .cse2 .cse3 (store (select .cse2 .cse3) .cse4 0)) |c_ULTIMATE.start_main_~n~0#1.base|) .cse5))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.offset|))))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select (select (let ((.cse10 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse8 (let ((.cse11 (let ((.cse13 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse10))) (store |c_#memory_$Pointer$.base| .cse13 (store (select |c_#memory_$Pointer$.base| .cse13) |ULTIMATE.start_main_#t~mem22#1.offset| 0))))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_main_~n~0#1.base|) .cse10))) (store .cse11 .cse12 (store (select .cse11 .cse12) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0)))))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~n~0#1.base|) .cse10))) (store .cse8 .cse9 (store (select .cse8 .cse9) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))) is different from false [2021-11-23 02:44:14,213 WARN L227 SmtUtils]: Spent 10.07s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:44:19,986 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-23 02:44:19,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4681 treesize of output 4676 [2021-11-23 02:44:20,043 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-23 02:44:20,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21812 treesize of output 21776 [2021-11-23 02:44:21,559 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 02:44:21,560 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 17398 treesize of output 17397 [2021-11-23 02:44:21,840 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 02:44:21,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1822416507] [2021-11-23 02:44:21,846 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-23 02:44:21,846 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:44:21,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:44:21,847 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:44:21,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:44:21,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,881 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 02:44:21,905 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 02:44:21,912 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 02:44:21,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,922 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 02:44:21,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 02:44:21,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,952 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 02:44:21,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,961 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 02:44:21,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,980 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 02:44:21,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,991 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 02:44:21,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:21,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:22,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:22,001 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 02:44:22,489 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:44:22,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:44:22,513 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:44:22,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:44:22,526 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 0 case distinctions, treesize of input 44 treesize of output 34 [2021-11-23 02:44:22,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:44:22,541 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 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-23 02:44:22,572 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:44:22,572 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 183 treesize of output 113 [2021-11-23 02:44:22,590 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:44:22,591 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 173 treesize of output 139 [2021-11-23 02:44:22,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 118 [2021-11-23 02:44:22,643 INFO L354 Elim1Store]: treesize reduction 116, result has 16.5 percent of original size [2021-11-23 02:44:22,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 229 treesize of output 150 [2021-11-23 02:44:22,674 INFO L354 Elim1Store]: treesize reduction 84, result has 21.5 percent of original size [2021-11-23 02:44:22,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 179 [2021-11-23 02:44:22,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 113 [2021-11-23 02:44:22,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:22,743 INFO L354 Elim1Store]: treesize reduction 124, result has 16.2 percent of original size [2021-11-23 02:44:22,743 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 6 case distinctions, treesize of input 243 treesize of output 155 [2021-11-23 02:44:22,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:22,783 INFO L354 Elim1Store]: treesize reduction 106, result has 25.4 percent of original size [2021-11-23 02:44:22,783 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 6 case distinctions, treesize of input 233 treesize of output 205 [2021-11-23 02:44:22,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 174 [2021-11-23 02:44:23,376 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:44:23,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:44:23,400 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:44:23,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:44:23,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-23 02:44:23,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:44:23,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2021-11-23 02:44:23,458 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:44:23,458 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 183 treesize of output 113 [2021-11-23 02:44:23,476 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:44:23,476 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 173 treesize of output 139 [2021-11-23 02:44:23,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 87 [2021-11-23 02:44:23,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:23,524 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-23 02:44:23,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 217 treesize of output 138 [2021-11-23 02:44:23,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:23,551 INFO L354 Elim1Store]: treesize reduction 64, result has 26.4 percent of original size [2021-11-23 02:44:23,552 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 207 treesize of output 176 [2021-11-23 02:44:23,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 148 [2021-11-23 02:44:23,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:23,621 INFO L354 Elim1Store]: treesize reduction 172, result has 15.7 percent of original size [2021-11-23 02:44:23,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 259 treesize of output 171 [2021-11-23 02:44:23,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:23,663 INFO L354 Elim1Store]: treesize reduction 114, result has 24.0 percent of original size [2021-11-23 02:44:23,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 212 [2021-11-23 02:44:23,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 190 [2021-11-23 02:44:24,865 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:44:24,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:44:24,912 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:44:24,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:44:24,917 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:44:27,915 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10130#(not (= (select |#valid| |ULTIMATE.start_main_~n~0#1.base|) 1))' at error location [2021-11-23 02:44:27,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:44:27,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:44:27,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-23 02:44:27,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725900155] [2021-11-23 02:44:27,916 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 02:44:27,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:44:27,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:44:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:44:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=2345, Unknown=25, NotChecked=306, Total=2970 [2021-11-23 02:44:27,917 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 02:44:34,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:34,649 INFO L93 Difference]: Finished difference Result 185 states and 218 transitions. [2021-11-23 02:44:34,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:44:34,650 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-23 02:44:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:34,651 INFO L225 Difference]: With dead ends: 185 [2021-11-23 02:44:34,651 INFO L226 Difference]: Without dead ends: 185 [2021-11-23 02:44:34,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 84.3s TimeCoverageRelationStatistics Valid=444, Invalid=3322, Unknown=28, NotChecked=366, Total=4160 [2021-11-23 02:44:34,653 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 75 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:34,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 302 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:44:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-23 02:44:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 141. [2021-11-23 02:44:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 125 states have (on average 1.328) internal successors, (166), 140 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:44:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2021-11-23 02:44:34,658 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 29 [2021-11-23 02:44:34,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:34,658 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2021-11-23 02:44:34,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 02:44:34,658 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2021-11-23 02:44:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:44:34,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:34,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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 02:44:34,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:34,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-23 02:44:34,881 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:44:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash 430661316, now seen corresponding path program 1 times [2021-11-23 02:44:34,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:44:34,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713527409] [2021-11-23 02:44:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:34,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:44:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:35,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:44:35,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713527409] [2021-11-23 02:44:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713527409] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:44:35,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368200760] [2021-11-23 02:44:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:35,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:44:35,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:35,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:44:35,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:44:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:35,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-23 02:44:35,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:35,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:44:35,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:44:35,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,472 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 02:44:35,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,481 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 02:44:35,738 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:44:35,738 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 02:44:35,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,794 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 02:44:35,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,805 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 02:44:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,977 INFO L354 Elim1Store]: treesize reduction 84, result has 23.6 percent of original size [2021-11-23 02:44:35,978 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 83 treesize of output 75 [2021-11-23 02:44:35,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,004 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 02:44:36,005 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 75 treesize of output 73 [2021-11-23 02:44:36,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,276 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-23 02:44:36,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 109 treesize of output 96 [2021-11-23 02:44:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,323 INFO L354 Elim1Store]: treesize reduction 144, result has 17.2 percent of original size [2021-11-23 02:44:36,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 102 [2021-11-23 02:44:40,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:40,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:40,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:40,631 INFO L354 Elim1Store]: treesize reduction 162, result has 20.2 percent of original size [2021-11-23 02:44:40,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 106 [2021-11-23 02:44:40,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:40,669 INFO L354 Elim1Store]: treesize reduction 148, result has 20.4 percent of original size [2021-11-23 02:44:40,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 118 [2021-11-23 02:44:57,103 INFO L354 Elim1Store]: treesize reduction 94, result has 3.1 percent of original size [2021-11-23 02:44:57,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 94 [2021-11-23 02:44:57,119 INFO L354 Elim1Store]: treesize reduction 126, result has 2.3 percent of original size [2021-11-23 02:44:57,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 42 [2021-11-23 02:44:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:57,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:46:21,557 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 02:46:21,557 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 986 treesize of output 985 [2021-11-23 02:48:13,025 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 122606 treesize of output 122510 [2021-11-23 02:48:14,120 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 162810 treesize of output 162618 [2021-11-23 02:48:25,544 WARN L227 SmtUtils]: Spent 11.42s on a formula simplification. DAG size of input: 498 DAG size of output: 491 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:48:25,549 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 02:48:25,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1696167522] [2021-11-23 02:48:25,552 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-23 02:48:25,552 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:48:25,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:48:25,552 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:48:25,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:48:25,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,574 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 02:48:25,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,604 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 02:48:25,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:48:25,619 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 02:48:25,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 02:48:25,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,638 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 02:48:25,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,647 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 02:48:25,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 02:48:25,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,674 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 02:48:25,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,688 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 02:48:25,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 40 [2021-11-23 02:48:25,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,834 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 21 [2021-11-23 02:48:25,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 35 [2021-11-23 02:48:25,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 64 [2021-11-23 02:48:25,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,936 INFO L354 Elim1Store]: treesize reduction 108, result has 19.4 percent of original size [2021-11-23 02:48:25,937 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 212 treesize of output 168 [2021-11-23 02:48:25,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:25,980 INFO L354 Elim1Store]: treesize reduction 108, result has 19.4 percent of original size [2021-11-23 02:48:25,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 188 [2021-11-23 02:48:25,996 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:48:25,996 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 165 treesize of output 144 [2021-11-23 02:48:26,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,091 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-23 02:48:26,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 242 treesize of output 193 [2021-11-23 02:48:26,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,155 INFO L354 Elim1Store]: treesize reduction 140, result has 20.9 percent of original size [2021-11-23 02:48:26,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 234 treesize of output 221 [2021-11-23 02:48:26,165 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 187 treesize of output 166 [2021-11-23 02:48:26,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,297 INFO L354 Elim1Store]: treesize reduction 192, result has 17.2 percent of original size [2021-11-23 02:48:26,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 264 treesize of output 210 [2021-11-23 02:48:26,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:48:26,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,375 INFO L354 Elim1Store]: treesize reduction 172, result has 21.8 percent of original size [2021-11-23 02:48:26,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 256 treesize of output 246 [2021-11-23 02:48:26,410 INFO L354 Elim1Store]: treesize reduction 116, result has 11.5 percent of original size [2021-11-23 02:48:26,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 215 [2021-11-23 02:48:26,729 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:48:26,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:48:26,749 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:48:26,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:48:26,761 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 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:48:26,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:48:26,772 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:48:26,795 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:48:26,795 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 145 treesize of output 99 [2021-11-23 02:48:26,807 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:48:26,807 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 137 treesize of output 115 [2021-11-23 02:48:26,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 71 [2021-11-23 02:48:26,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,847 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-23 02:48:26,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 124 [2021-11-23 02:48:26,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,869 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-23 02:48:26,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 148 [2021-11-23 02:48:26,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 93 [2021-11-23 02:48:26,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,917 INFO L354 Elim1Store]: treesize reduction 100, result has 18.0 percent of original size [2021-11-23 02:48:26,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 197 treesize of output 141 [2021-11-23 02:48:26,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:48:26,946 INFO L354 Elim1Store]: treesize reduction 84, result has 26.3 percent of original size [2021-11-23 02:48:26,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 173 [2021-11-23 02:48:26,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 142 [2021-11-23 02:48:27,096 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:48:27,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:48:27,116 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:48:27,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:48:27,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:48:27,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:48:27,140 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:48:27,162 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:48:27,163 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 145 treesize of output 99 [2021-11-23 02:48:27,175 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:48:27,175 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 137 treesize of output 115 [2021-11-23 02:48:27,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 94 [2021-11-23 02:48:27,238 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-23 02:48:27,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 132 [2021-11-23 02:48:27,258 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:48:27,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 151 [2021-11-23 02:48:27,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 128 [2021-11-23 02:48:27,308 INFO L354 Elim1Store]: treesize reduction 174, result has 15.5 percent of original size [2021-11-23 02:48:27,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 217 treesize of output 161 [2021-11-23 02:48:27,337 INFO L354 Elim1Store]: treesize reduction 112, result has 21.1 percent of original size [2021-11-23 02:48:27,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 209 treesize of output 183 [2021-11-23 02:48:27,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 162 [2021-11-23 02:48:27,526 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:48:27,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:48:27,550 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:48:27,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:48:27,563 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 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:48:27,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:48:27,575 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:48:27,605 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:48:27,605 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 145 treesize of output 99 [2021-11-23 02:48:27,619 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:48:27,619 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 137 treesize of output 115 [2021-11-23 02:48:27,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 71 [2021-11-23 02:48:27,662 INFO L354 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-11-23 02:48:27,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 124 [2021-11-23 02:48:27,685 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:48:27,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 148 [2021-11-23 02:48:27,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 120 [2021-11-23 02:48:27,741 INFO L354 Elim1Store]: treesize reduction 154, result has 15.4 percent of original size [2021-11-23 02:48:27,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 209 treesize of output 153 [2021-11-23 02:48:27,771 INFO L354 Elim1Store]: treesize reduction 112, result has 21.1 percent of original size [2021-11-23 02:48:27,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 180 [2021-11-23 02:48:27,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 115 [2021-11-23 02:48:27,870 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:48:31,426 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10703#(and (= |ULTIMATE.start_main_~root~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~n~0#1.base|) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:48:31,426 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:48:31,426 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:48:31,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-23 02:48:31,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793888336] [2021-11-23 02:48:31,426 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 02:48:31,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:48:31,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:31,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:48:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=3369, Unknown=100, NotChecked=0, Total=3906 [2021-11-23 02:48:31,428 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 02:48:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:32,862 INFO L93 Difference]: Finished difference Result 181 states and 215 transitions. [2021-11-23 02:48:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:48:32,862 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-23 02:48:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:32,863 INFO L225 Difference]: With dead ends: 181 [2021-11-23 02:48:32,863 INFO L226 Difference]: Without dead ends: 181 [2021-11-23 02:48:32,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 218.6s TimeCoverageRelationStatistics Valid=610, Invalid=4402, Unknown=100, NotChecked=0, Total=5112 [2021-11-23 02:48:32,866 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 150 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:32,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 214 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:48:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-23 02:48:32,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 167. [2021-11-23 02:48:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 151 states have (on average 1.3178807947019868) internal successors, (199), 166 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:48:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 199 transitions. [2021-11-23 02:48:32,871 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 199 transitions. Word has length 29 [2021-11-23 02:48:32,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:32,871 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 199 transitions. [2021-11-23 02:48:32,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 02:48:32,872 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 199 transitions. [2021-11-23 02:48:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 02:48:32,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:32,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:48:32,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:48:33,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-23 02:48:33,093 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:48:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:33,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1102047102, now seen corresponding path program 1 times [2021-11-23 02:48:33,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:33,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560216614] [2021-11-23 02:48:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:33,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:48:33,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560216614] [2021-11-23 02:48:33,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560216614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:48:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252871005] [2021-11-23 02:48:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:33,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:48:33,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:48:33,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:48:33,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:48:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:33,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 02:48:33,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:48:33,685 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:48:33,685 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 02:48:33,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:48:33,850 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-23 02:48:33,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-11-23 02:48:34,013 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-23 02:48:34,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 41 [2021-11-23 02:48:38,169 INFO L354 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-11-23 02:48:38,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 49 [2021-11-23 02:48:38,433 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-23 02:48:38,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 33 [2021-11-23 02:48:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:48:38,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:49:24,607 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 7073 treesize of output 7061 [2021-11-23 02:49:24,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 02:49:24,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [996862692] [2021-11-23 02:49:24,655 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-11-23 02:49:24,656 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:49:24,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:49:24,656 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:49:24,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:49:24,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,688 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 02:49:24,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:49:24,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,716 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 02:49:24,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:49:24,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 02:49:24,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,748 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 02:49:24,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,756 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 02:49:24,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,775 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 02:49:24,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,786 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 02:49:24,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:24,798 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 02:49:25,182 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:49:25,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:49:25,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 02:49:25,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:49:25,206 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 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:49:25,212 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:49:25,236 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:49:25,237 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 145 treesize of output 99 [2021-11-23 02:49:25,250 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:49:25,250 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 137 treesize of output 115 [2021-11-23 02:49:25,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 94 [2021-11-23 02:49:25,315 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-23 02:49:25,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 132 [2021-11-23 02:49:25,342 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:49:25,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 151 [2021-11-23 02:49:25,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 93 [2021-11-23 02:49:25,407 INFO L354 Elim1Store]: treesize reduction 116, result has 15.9 percent of original size [2021-11-23 02:49:25,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 197 treesize of output 141 [2021-11-23 02:49:25,452 INFO L354 Elim1Store]: treesize reduction 104, result has 22.4 percent of original size [2021-11-23 02:49:25,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 173 [2021-11-23 02:49:25,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 142 [2021-11-23 02:49:25,533 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-23 02:49:25,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-23 02:49:25,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2021-11-23 02:49:25,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:49:25,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,614 INFO L354 Elim1Store]: treesize reduction 178, result has 10.6 percent of original size [2021-11-23 02:49:25,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 200 treesize of output 161 [2021-11-23 02:49:25,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,659 INFO L354 Elim1Store]: treesize reduction 180, result has 11.3 percent of original size [2021-11-23 02:49:25,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 214 treesize of output 211 [2021-11-23 02:49:25,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,766 INFO L354 Elim1Store]: treesize reduction 308, result has 12.5 percent of original size [2021-11-23 02:49:25,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 323 treesize of output 218 [2021-11-23 02:49:25,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,832 INFO L354 Elim1Store]: treesize reduction 322, result has 13.4 percent of original size [2021-11-23 02:49:25,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 313 treesize of output 286 [2021-11-23 02:49:25,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 215 [2021-11-23 02:49:25,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:25,983 INFO L354 Elim1Store]: treesize reduction 322, result has 12.3 percent of original size [2021-11-23 02:49:25,984 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 20 case distinctions, treesize of input 345 treesize of output 231 [2021-11-23 02:49:25,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:26,075 INFO L354 Elim1Store]: treesize reduction 364, result has 14.8 percent of original size [2021-11-23 02:49:26,075 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 20 case distinctions, treesize of input 335 treesize of output 316 [2021-11-23 02:49:26,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 276 [2021-11-23 02:49:26,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:26,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:26,254 INFO L354 Elim1Store]: treesize reduction 496, result has 10.8 percent of original size [2021-11-23 02:49:26,254 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 27 case distinctions, treesize of input 387 treesize of output 264 [2021-11-23 02:49:26,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:26,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:26,372 INFO L354 Elim1Store]: treesize reduction 498, result has 13.2 percent of original size [2021-11-23 02:49:26,373 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 27 case distinctions, treesize of input 377 treesize of output 352 [2021-11-23 02:49:26,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 267 [2021-11-23 02:49:27,086 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:49:27,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-23 02:49:27,111 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:49:27,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:49:27,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:49:27,128 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 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:49:27,136 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:49:27,162 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:49:27,162 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 145 treesize of output 99 [2021-11-23 02:49:27,177 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:49:27,177 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 137 treesize of output 115 [2021-11-23 02:49:27,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 71 [2021-11-23 02:49:27,223 INFO L354 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-11-23 02:49:27,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 124 [2021-11-23 02:49:27,260 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:49:27,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 148 [2021-11-23 02:49:27,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 93 [2021-11-23 02:49:27,333 INFO L354 Elim1Store]: treesize reduction 116, result has 15.9 percent of original size [2021-11-23 02:49:27,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 197 treesize of output 141 [2021-11-23 02:49:27,373 INFO L354 Elim1Store]: treesize reduction 104, result has 22.4 percent of original size [2021-11-23 02:49:27,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 173 [2021-11-23 02:49:27,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 142 [2021-11-23 02:49:27,481 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-23 02:49:27,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-23 02:49:27,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2021-11-23 02:49:27,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,553 INFO L354 Elim1Store]: treesize reduction 178, result has 10.6 percent of original size [2021-11-23 02:49:27,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 200 treesize of output 161 [2021-11-23 02:49:27,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,586 INFO L354 Elim1Store]: treesize reduction 180, result has 11.3 percent of original size [2021-11-23 02:49:27,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 214 treesize of output 211 [2021-11-23 02:49:27,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:49:27,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,675 INFO L354 Elim1Store]: treesize reduction 308, result has 12.5 percent of original size [2021-11-23 02:49:27,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 323 treesize of output 218 [2021-11-23 02:49:27,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,751 INFO L354 Elim1Store]: treesize reduction 322, result has 13.4 percent of original size [2021-11-23 02:49:27,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 313 treesize of output 286 [2021-11-23 02:49:27,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 227 [2021-11-23 02:49:27,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,874 INFO L354 Elim1Store]: treesize reduction 398, result has 11.4 percent of original size [2021-11-23 02:49:27,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 357 treesize of output 243 [2021-11-23 02:49:27,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:27,950 INFO L354 Elim1Store]: treesize reduction 402, result has 13.5 percent of original size [2021-11-23 02:49:27,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 347 treesize of output 323 [2021-11-23 02:49:27,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 253 [2021-11-23 02:49:28,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:28,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:28,146 INFO L354 Elim1Store]: treesize reduction 482, result has 10.7 percent of original size [2021-11-23 02:49:28,147 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 27 case distinctions, treesize of input 383 treesize of output 260 [2021-11-23 02:49:28,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:28,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:49:28,245 INFO L354 Elim1Store]: treesize reduction 502, result has 13.1 percent of original size [2021-11-23 02:49:28,246 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 27 case distinctions, treesize of input 373 treesize of output 352 [2021-11-23 02:49:28,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 363 treesize of output 314 [2021-11-23 02:49:30,926 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:49:30,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:49:30,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 02:49:30,944 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:49:30,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:49:30,953 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 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:49:30,976 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:49:30,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 99 [2021-11-23 02:49:30,990 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:49:30,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 115 [2021-11-23 02:49:30,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 71 [2021-11-23 02:49:31,044 INFO L354 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-11-23 02:49:31,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 124 [2021-11-23 02:49:31,073 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:49:31,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 148 [2021-11-23 02:49:31,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 120 [2021-11-23 02:49:31,165 INFO L354 Elim1Store]: treesize reduction 212, result has 12.8 percent of original size [2021-11-23 02:49:31,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 316 treesize of output 223 [2021-11-23 02:49:31,216 INFO L354 Elim1Store]: treesize reduction 164, result has 16.8 percent of original size [2021-11-23 02:49:31,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 314 treesize of output 268 [2021-11-23 02:49:31,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 273 [2021-11-23 02:49:31,320 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-11-23 02:49:31,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2021-11-23 02:49:31,331 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 02:49:31,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 227 [2021-11-23 02:49:31,516 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:49:36,432 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11277#(and (or (and (<= 0 |ULTIMATE.start_main_~root~0#1.offset|) (exists ((|v_ULTIMATE.start_main_~n~0#1.base_140| Int) (|v_ULTIMATE.start_main_~n~0#1.offset_121| Int)) (and (= |ULTIMATE.start_main_~n~0#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_140|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_121| 4))) (= (select |#valid| |v_ULTIMATE.start_main_~n~0#1.base_140|) 1) (= |ULTIMATE.start_main_~n~0#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_140|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_121| 4))) (<= 0 |v_ULTIMATE.start_main_~n~0#1.offset_121|) (<= (+ |v_ULTIMATE.start_main_~n~0#1.offset_121| 8) (select |#length| |v_ULTIMATE.start_main_~n~0#1.base_140|))))) (and (= |ULTIMATE.start_main_~root~0#1.offset| |ULTIMATE.start_main_~n~0#1.offset|) (exists ((|v_ULTIMATE.start_main_~n~0#1.offset_120| Int)) (and (or (and (<= 0 |#NULL.base|) (<= 0 |v_ULTIMATE.start_main_~n~0#1.offset_120|) (<= 0 |ULTIMATE.start_main_~root~0#1.offset|) (<= |ULTIMATE.start_main_~root~0#1.offset| 0) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|)) (and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~root~0#1.offset|) (<= |ULTIMATE.start_main_~root~0#1.offset| 0) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))) (or (and (<= 0 |v_ULTIMATE.start_main_~n~0#1.offset_120|) (= |ULTIMATE.start_main_~root~0#1.offset| 0) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_main_~n~0#1.base_139| Int)) (and (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4)))) (= |v_ULTIMATE.start_main_~n~0#1.base_139| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|) 8))) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) 1) (= (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|)) 12) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|)) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4)) 0) (<= (+ 12 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4)))) (not (= |v_ULTIMATE.start_main_~n~0#1.base_139| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4)))) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|)) 0) 0) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|)) 4) 0) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|) 0) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) 4) 0) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) 0) 0) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4)) 0)) (= (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) 12) (< (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|) |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~n~0#1.offset_120| (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) (+ 8 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))))) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|)) 0) 0) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) 4) 0) (= (select |#valid| |v_ULTIMATE.start_main_~n~0#1.base_139|) 1) (<= (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 8) (select |#length| |v_ULTIMATE.start_main_~n~0#1.base_139|)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|) 0)) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) 0) 0) (= |v_ULTIMATE.start_main_~n~0#1.offset_120| (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|) 8))) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|) |v_ULTIMATE.start_main_~n~0#1.base_139|)) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4))) (+ 8 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4)))) |v_ULTIMATE.start_main_~n~0#1.base_139|) (< (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_120| 4)) |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_139|) |v_ULTIMATE.start_main_~n~0#1.offset_120|)) 4) 0))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~root~0#1.base|) (+ |ULTIMATE.start_main_~root~0#1.offset| 4)) 0) (<= (+ |ULTIMATE.start_main_~root~0#1.offset| 12) (select |#length| |ULTIMATE.start_main_~root~0#1.base|)) (= 18 (select |#length| 2)) (< |ULTIMATE.start_main_~root~0#1.base| |#StackHeapBarrier|) (= (select |#length| |ULTIMATE.start_main_~root~0#1.base|) 12) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= |ULTIMATE.start_main_~root~0#1.offset| 0) (= 2 (select |#length| 1)) (not (= |ULTIMATE.start_main_~root~0#1.base| 0)) (= 0 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~root~0#1.base|) |ULTIMATE.start_main_~root~0#1.offset|)) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~root~0#1.base|) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~root~0#1.base|) |ULTIMATE.start_main_~root~0#1.offset|) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~root~0#1.base|) (+ |ULTIMATE.start_main_~root~0#1.offset| 8)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~root~0#1.base|) (+ |ULTIMATE.start_main_~root~0#1.offset| 4)) 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |#valid| (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~root~0#1.base| 1)) (= (select |#valid| |ULTIMATE.start_main_~root~0#1.base|) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~root~0#1.base|) (+ |ULTIMATE.start_main_~root~0#1.offset| 8)) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) (= |ULTIMATE.start_main_~n~0#1.base| |ULTIMATE.start_main_~root~0#1.base|))) (not (= (select |#valid| |ULTIMATE.start_main_~n~0#1.base|) 1)))' at error location [2021-11-23 02:49:36,432 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:49:36,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:49:36,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-23 02:49:36,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928214928] [2021-11-23 02:49:36,433 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 02:49:36,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:49:36,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:36,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:49:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=3388, Unknown=24, NotChecked=0, Total=3906 [2021-11-23 02:49:36,436 INFO L87 Difference]: Start difference. First operand 167 states and 199 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:49:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:37,117 INFO L93 Difference]: Finished difference Result 281 states and 343 transitions. [2021-11-23 02:49:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:49:37,118 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 02:49:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:37,120 INFO L225 Difference]: With dead ends: 281 [2021-11-23 02:49:37,120 INFO L226 Difference]: Without dead ends: 281 [2021-11-23 02:49:37,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=680, Invalid=4266, Unknown=24, NotChecked=0, Total=4970 [2021-11-23 02:49:37,122 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 277 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:37,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 203 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:49:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-23 02:49:37,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 214. [2021-11-23 02:49:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 198 states have (on average 1.3434343434343434) internal successors, (266), 213 states have internal predecessors, (266), 0 states have call successors, (0), 0 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 02:49:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 266 transitions. [2021-11-23 02:49:37,128 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 266 transitions. Word has length 36 [2021-11-23 02:49:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:37,128 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 266 transitions. [2021-11-23 02:49:37,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:49:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 266 transitions. [2021-11-23 02:49:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 02:49:37,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:37,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:49:37,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:49:37,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-23 02:49:37,330 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:49:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:37,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1102047103, now seen corresponding path program 1 times [2021-11-23 02:49:37,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:37,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137859176] [2021-11-23 02:49:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:37,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:49:37,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:37,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137859176] [2021-11-23 02:49:37,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137859176] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:49:37,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922623759] [2021-11-23 02:49:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:37,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:49:37,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:49:37,708 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:49:37,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:49:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:37,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-23 02:49:37,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:49:37,942 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 02:49:37,955 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:49:37,955 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 02:49:37,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 02:49:37,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:49:38,092 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-23 02:49:38,092 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 02:49:38,107 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:49:38,107 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 67 treesize of output 60 [2021-11-23 02:49:38,246 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-23 02:49:38,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 70 [2021-11-23 02:49:38,269 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-11-23 02:49:38,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 93 [2021-11-23 02:49:41,239 INFO L354 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-11-23 02:49:41,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 80 [2021-11-23 02:49:41,262 INFO L354 Elim1Store]: treesize reduction 94, result has 24.8 percent of original size [2021-11-23 02:49:41,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 109 [2021-11-23 02:49:42,849 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-11-23 02:49:42,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 58 [2021-11-23 02:49:42,860 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-23 02:49:42,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 33 [2021-11-23 02:49:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:49:42,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:50:38,086 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 54860 treesize of output 54812 [2021-11-23 02:50:38,191 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 415885 treesize of output 414349 [2021-11-23 02:50:39,898 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 02:50:39,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1724423984] [2021-11-23 02:50:39,901 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-11-23 02:50:39,901 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:50:39,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:50:39,901 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:50:39,902 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:50:39,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:39,932 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 02:50:39,947 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 02:50:39,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:39,955 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 02:50:39,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:50:39,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:39,978 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 02:50:39,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:39,985 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 02:50:39,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:39,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 02:50:40,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,005 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 02:50:40,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,014 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 02:50:40,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,032 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 02:50:40,436 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:50:40,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:50:40,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 02:50:40,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:50:40,459 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 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:50:40,466 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:50:40,494 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:50:40,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 99 [2021-11-23 02:50:40,512 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:50:40,512 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 137 treesize of output 115 [2021-11-23 02:50:40,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 71 [2021-11-23 02:50:40,557 INFO L354 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-11-23 02:50:40,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 124 [2021-11-23 02:50:40,578 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:50:40,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 148 [2021-11-23 02:50:40,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 120 [2021-11-23 02:50:40,629 INFO L354 Elim1Store]: treesize reduction 154, result has 15.4 percent of original size [2021-11-23 02:50:40,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 209 treesize of output 153 [2021-11-23 02:50:40,660 INFO L354 Elim1Store]: treesize reduction 112, result has 21.1 percent of original size [2021-11-23 02:50:40,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 180 [2021-11-23 02:50:40,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 115 [2021-11-23 02:50:40,735 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:50:40,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 32 [2021-11-23 02:50:40,771 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-23 02:50:40,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-23 02:50:40,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,817 INFO L354 Elim1Store]: treesize reduction 120, result has 11.1 percent of original size [2021-11-23 02:50:40,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 188 treesize of output 149 [2021-11-23 02:50:40,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,847 INFO L354 Elim1Store]: treesize reduction 164, result has 12.3 percent of original size [2021-11-23 02:50:40,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 case distinctions, treesize of input 202 treesize of output 204 [2021-11-23 02:50:40,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:50:40,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,946 INFO L354 Elim1Store]: treesize reduction 250, result has 13.2 percent of original size [2021-11-23 02:50:40,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 311 treesize of output 206 [2021-11-23 02:50:40,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:40,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,029 INFO L354 Elim1Store]: treesize reduction 306, result has 14.0 percent of original size [2021-11-23 02:50:41,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 301 treesize of output 279 [2021-11-23 02:50:41,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 215 [2021-11-23 02:50:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,133 INFO L354 Elim1Store]: treesize reduction 322, result has 12.3 percent of original size [2021-11-23 02:50:41,133 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 20 case distinctions, treesize of input 345 treesize of output 231 [2021-11-23 02:50:41,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,204 INFO L354 Elim1Store]: treesize reduction 364, result has 14.8 percent of original size [2021-11-23 02:50:41,204 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 20 case distinctions, treesize of input 335 treesize of output 316 [2021-11-23 02:50:41,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 276 [2021-11-23 02:50:41,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,343 INFO L354 Elim1Store]: treesize reduction 496, result has 10.8 percent of original size [2021-11-23 02:50:41,343 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 27 case distinctions, treesize of input 387 treesize of output 264 [2021-11-23 02:50:41,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:41,438 INFO L354 Elim1Store]: treesize reduction 498, result has 13.2 percent of original size [2021-11-23 02:50:41,439 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 27 case distinctions, treesize of input 377 treesize of output 352 [2021-11-23 02:50:41,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 318 [2021-11-23 02:50:42,100 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:50:42,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:50:42,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 02:50:42,127 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 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:50:42,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:50:42,140 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:50:42,170 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:50:42,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 99 [2021-11-23 02:50:42,187 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:50:42,187 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 137 treesize of output 115 [2021-11-23 02:50:42,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 94 [2021-11-23 02:50:42,238 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-23 02:50:42,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 132 [2021-11-23 02:50:42,265 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:50:42,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 151 [2021-11-23 02:50:42,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 128 [2021-11-23 02:50:42,338 INFO L354 Elim1Store]: treesize reduction 174, result has 15.5 percent of original size [2021-11-23 02:50:42,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 217 treesize of output 161 [2021-11-23 02:50:42,368 INFO L354 Elim1Store]: treesize reduction 112, result has 21.1 percent of original size [2021-11-23 02:50:42,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 209 treesize of output 183 [2021-11-23 02:50:42,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 115 [2021-11-23 02:50:42,439 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:50:42,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 32 [2021-11-23 02:50:42,475 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-23 02:50:42,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-23 02:50:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,519 INFO L354 Elim1Store]: treesize reduction 120, result has 11.1 percent of original size [2021-11-23 02:50:42,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 188 treesize of output 149 [2021-11-23 02:50:42,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,551 INFO L354 Elim1Store]: treesize reduction 164, result has 12.3 percent of original size [2021-11-23 02:50:42,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 case distinctions, treesize of input 202 treesize of output 204 [2021-11-23 02:50:42,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-23 02:50:42,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,654 INFO L354 Elim1Store]: treesize reduction 250, result has 13.2 percent of original size [2021-11-23 02:50:42,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 311 treesize of output 206 [2021-11-23 02:50:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,710 INFO L354 Elim1Store]: treesize reduction 306, result has 14.0 percent of original size [2021-11-23 02:50:42,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 301 treesize of output 279 [2021-11-23 02:50:42,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 215 [2021-11-23 02:50:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,838 INFO L354 Elim1Store]: treesize reduction 322, result has 12.3 percent of original size [2021-11-23 02:50:42,839 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 20 case distinctions, treesize of input 345 treesize of output 231 [2021-11-23 02:50:42,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,910 INFO L354 Elim1Store]: treesize reduction 364, result has 14.8 percent of original size [2021-11-23 02:50:42,910 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 20 case distinctions, treesize of input 335 treesize of output 316 [2021-11-23 02:50:42,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 274 treesize of output 241 [2021-11-23 02:50:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:43,053 INFO L354 Elim1Store]: treesize reduction 388, result has 11.8 percent of original size [2021-11-23 02:50:43,053 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 27 case distinctions, treesize of input 371 treesize of output 248 [2021-11-23 02:50:43,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:43,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:43,143 INFO L354 Elim1Store]: treesize reduction 442, result has 14.7 percent of original size [2021-11-23 02:50:43,143 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 27 case distinctions, treesize of input 361 treesize of output 345 [2021-11-23 02:50:43,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 302 [2021-11-23 02:50:45,830 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:50:45,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:50:45,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 02:50:45,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:50:45,848 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 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-23 02:50:45,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:50:45,874 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:50:45,874 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 145 treesize of output 99 [2021-11-23 02:50:45,888 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 02:50:45,888 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 137 treesize of output 115 [2021-11-23 02:50:45,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 71 [2021-11-23 02:50:45,924 INFO L354 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-11-23 02:50:45,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 124 [2021-11-23 02:50:45,945 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:50:45,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 148 [2021-11-23 02:50:45,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 93 [2021-11-23 02:50:46,044 INFO L354 Elim1Store]: treesize reduction 208, result has 14.4 percent of original size [2021-11-23 02:50:46,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 316 treesize of output 227 [2021-11-23 02:50:46,090 INFO L354 Elim1Store]: treesize reduction 156, result has 20.8 percent of original size [2021-11-23 02:50:46,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 308 treesize of output 274 [2021-11-23 02:50:46,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 261 [2021-11-23 02:50:46,174 INFO L354 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2021-11-23 02:50:46,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 219 [2021-11-23 02:50:46,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:50:46,218 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-23 02:50:46,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-23 02:50:46,408 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:50:51,204 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12007#(and (or (and (= |ULTIMATE.start_main_~root~0#1.offset| |ULTIMATE.start_main_~n~0#1.offset|) (exists ((|v_ULTIMATE.start_main_~n~0#1.offset_133| Int)) (and (or (and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~root~0#1.offset|) (<= |ULTIMATE.start_main_~root~0#1.offset| 0) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= 0 |v_ULTIMATE.start_main_~n~0#1.offset_133|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|)) (and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~root~0#1.offset|) (<= |ULTIMATE.start_main_~root~0#1.offset| 0) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))) (or (and (exists ((|v_ULTIMATE.start_main_~n~0#1.base_152| Int)) (and (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4))) 4) 0) (<= (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 8) (select |#length| |v_ULTIMATE.start_main_~n~0#1.base_152|)) (< (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)) |#StackHeapBarrier|) (= (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|)) 12) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|)) 0) 0) (= |v_ULTIMATE.start_main_~n~0#1.base_152| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4))) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)) 8))) (= |v_ULTIMATE.start_main_~n~0#1.offset_133| (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4))) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)) 8))) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4))) 4) 0) (= |v_ULTIMATE.start_main_~n~0#1.offset_133| (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|)) 8)) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)) 12) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)))) (< (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|) |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4))) 0) 0) (= (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4))) 12) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|)) 8) |v_ULTIMATE.start_main_~n~0#1.base_152|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4))) 1) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|)) 1) (not (= |v_ULTIMATE.start_main_~n~0#1.base_152| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)))) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|) 0)) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|)) 4) 0) (not (= |v_ULTIMATE.start_main_~n~0#1.base_152| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|))) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|) 0) (= (select |#valid| |v_ULTIMATE.start_main_~n~0#1.base_152|) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4))) 0) 0) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|)) 4) 0) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)))) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)) 0)) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_152|) |v_ULTIMATE.start_main_~n~0#1.offset_133|)) 0) 0) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_152|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_133| 4)) 0))) (= |ULTIMATE.start_main_~root~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |v_ULTIMATE.start_main_~n~0#1.offset_133|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~root~0#1.base|) (+ |ULTIMATE.start_main_~root~0#1.offset| 4)) 0) (<= (+ |ULTIMATE.start_main_~root~0#1.offset| 12) (select |#length| |ULTIMATE.start_main_~root~0#1.base|)) (= 18 (select |#length| 2)) (< |ULTIMATE.start_main_~root~0#1.base| |#StackHeapBarrier|) (= (select |#length| |ULTIMATE.start_main_~root~0#1.base|) 12) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= |ULTIMATE.start_main_~root~0#1.offset| 0) (= 2 (select |#length| 1)) (not (= |ULTIMATE.start_main_~root~0#1.base| 0)) (= 0 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~root~0#1.base|) |ULTIMATE.start_main_~root~0#1.offset|)) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~root~0#1.base|) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~root~0#1.base|) |ULTIMATE.start_main_~root~0#1.offset|) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~root~0#1.base|) (+ |ULTIMATE.start_main_~root~0#1.offset| 8)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~root~0#1.base|) (+ |ULTIMATE.start_main_~root~0#1.offset| 4)) 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |#valid| (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~root~0#1.base| 1)) (= (select |#valid| |ULTIMATE.start_main_~root~0#1.base|) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~root~0#1.base|) (+ |ULTIMATE.start_main_~root~0#1.offset| 8)) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) (= |ULTIMATE.start_main_~n~0#1.base| |ULTIMATE.start_main_~root~0#1.base|)) (and (exists ((|v_ULTIMATE.start_main_~n~0#1.base_153| Int) (|v_ULTIMATE.start_main_~n~0#1.offset_134| Int)) (and (= |ULTIMATE.start_main_~n~0#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_153|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_134| 4))) (<= 0 |v_ULTIMATE.start_main_~n~0#1.offset_134|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_153|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_134| 4)) |ULTIMATE.start_main_~n~0#1.offset|) (<= (+ |v_ULTIMATE.start_main_~n~0#1.offset_134| 8) (select |#length| |v_ULTIMATE.start_main_~n~0#1.base_153|)) (= (select |#valid| |v_ULTIMATE.start_main_~n~0#1.base_153|) 1))) (<= 0 |ULTIMATE.start_main_~root~0#1.offset|))) (or (< |ULTIMATE.start_main_~n~0#1.offset| 0) (< (select |#length| |ULTIMATE.start_main_~n~0#1.base|) (+ |ULTIMATE.start_main_~n~0#1.offset| 4))))' at error location [2021-11-23 02:50:51,204 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:50:51,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:50:51,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-23 02:50:51,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924769987] [2021-11-23 02:50:51,205 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 02:50:51,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:50:51,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:50:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:50:51,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=3576, Unknown=27, NotChecked=0, Total=4032 [2021-11-23 02:50:51,207 INFO L87 Difference]: Start difference. First operand 214 states and 266 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:50:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:55,382 INFO L93 Difference]: Finished difference Result 324 states and 395 transitions. [2021-11-23 02:50:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:50:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 02:50:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:55,384 INFO L225 Difference]: With dead ends: 324 [2021-11-23 02:50:55,384 INFO L226 Difference]: Without dead ends: 324 [2021-11-23 02:50:55,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 67.8s TimeCoverageRelationStatistics Valid=632, Invalid=4889, Unknown=29, NotChecked=0, Total=5550 [2021-11-23 02:50:55,387 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 248 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:55,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 337 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:50:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-23 02:50:55,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 217. [2021-11-23 02:50:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 201 states have (on average 1.3383084577114428) internal successors, (269), 216 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 02:50:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 269 transitions. [2021-11-23 02:50:55,394 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 269 transitions. Word has length 36 [2021-11-23 02:50:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:55,394 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 269 transitions. [2021-11-23 02:50:55,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:50:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 269 transitions. [2021-11-23 02:50:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 02:50:55,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:55,395 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:50:55,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:50:55,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-23 02:50:55,596 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-23 02:50:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1102040933, now seen corresponding path program 1 times [2021-11-23 02:50:55,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:55,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188407970] [2021-11-23 02:50:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:55,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:50:56,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:56,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188407970] [2021-11-23 02:50:56,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188407970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:50:56,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861845394] [2021-11-23 02:50:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:56,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:50:56,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:50:56,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:50:56,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd577ff-f89f-4d9c-831b-fb69fc2906dc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:50:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:56,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-23 02:50:56,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:50:56,360 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:50:56,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-23 02:50:56,403 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 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-23 02:50:56,517 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 02:50:56,517 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 36 treesize of output 26 [2021-11-23 02:50:56,656 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-23 02:50:56,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 38 [2021-11-23 02:51:00,849 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-23 02:51:00,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 51 [2021-11-23 02:51:00,999 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-23 02:51:00,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-11-23 02:51:01,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:51:01,099 INFO L354 Elim1Store]: treesize reduction 49, result has 15.5 percent of original size [2021-11-23 02:51:01,099 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 69 treesize of output 58 [2021-11-23 02:51:01,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:51:01,344 INFO L354 Elim1Store]: treesize reduction 114, result has 18.6 percent of original size [2021-11-23 02:51:01,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 97 treesize of output 68 [2021-11-23 02:51:01,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:51:01,641 INFO L354 Elim1Store]: treesize reduction 186, result has 15.1 percent of original size [2021-11-23 02:51:01,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 112 treesize of output 80 [2021-11-23 02:51:05,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:51:05,937 INFO L354 Elim1Store]: treesize reduction 192, result has 17.6 percent of original size [2021-11-23 02:51:05,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 114 treesize of output 88 [2021-11-23 02:51:06,314 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-23 02:51:06,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 47 [2021-11-23 02:51:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:51:06,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:51:11,962 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem24#1.offset| Int)) (= (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2021-11-23 02:51:18,540 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select |c_#valid| (select (select (let ((.cse2 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2021-11-23 02:51:20,550 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select |c_#valid| (select (select (let ((.cse2 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base|) |ULTIMATE.start_main_#t~mem22#1.offset| 0)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2021-11-23 02:51:22,559 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int)) (= (select |c_#valid| (select (select (let ((.cse2 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (let ((.cse3 (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse5 (store (select |c_#memory_$Pointer$.base| .cse5) |ULTIMATE.start_main_#t~mem22#1.offset| 0))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2021-11-23 02:51:56,252 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem16#1.offset| Int) (|v_ULTIMATE.start_main_#t~malloc21#1.base_26| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int) (|ULTIMATE.start_main_#t~mem17#1.offset| Int) (|ULTIMATE.start_main_#t~mem15#1.offset| Int)) (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem15#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem15#1.base|) |ULTIMATE.start_main_#t~mem15#1.offset| 0)))) (let ((.cse10 (select (select .cse9 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (store .cse9 .cse10 (store (select .cse9 .cse10) (+ 4 |ULTIMATE.start_main_#t~mem16#1.offset|) 0)))))) (let ((.cse0 (select (select .cse8 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc21#1.base_26|) 0)) (not (= (select |c_#valid| .cse0) 1)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_#t~malloc21#1.base_26| 1) (select (select (let ((.cse3 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse1 (let ((.cse4 (let ((.cse6 (let ((.cse7 (store .cse8 .cse0 (store (select .cse8 .cse0) (+ 8 |ULTIMATE.start_main_#t~mem17#1.offset|) |c_ULTIMATE.start_main_~n~0#1.base|)))) (store .cse7 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~n~0#1.base|) .cse3 |v_ULTIMATE.start_main_#t~malloc21#1.base_26|))))) (store .cse6 |v_ULTIMATE.start_main_#t~malloc21#1.base_26| (store (select .cse6 |v_ULTIMATE.start_main_#t~malloc21#1.base_26|) |ULTIMATE.start_main_#t~mem22#1.offset| 0))))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~n~0#1.base|) .cse3))) (store .cse4 .cse5 (store (select .cse4 .cse5) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0)))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~n~0#1.base|) .cse3))) (store .cse1 .cse2 (store (select .cse1 .cse2) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1))))) is different from false [2021-11-23 02:51:59,286 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem16#1.offset| Int) (|v_ULTIMATE.start_main_#t~malloc21#1.base_26| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int) (|ULTIMATE.start_main_#t~mem17#1.offset| Int) (|ULTIMATE.start_main_#t~mem15#1.offset| Int)) (let ((.cse7 (let ((.cse9 (let ((.cse11 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse11 (store (select |c_#memory_$Pointer$.base| .cse11) |ULTIMATE.start_main_#t~mem15#1.offset| 0))))) (let ((.cse10 (select (select .cse9 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (store .cse9 .cse10 (store (select .cse9 .cse10) (+ 4 |ULTIMATE.start_main_#t~mem16#1.offset|) 0)))))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc21#1.base_26|) 0)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_#t~malloc21#1.base_26| 1) (select (select (let ((.cse2 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (let ((.cse3 (let ((.cse5 (let ((.cse6 (store .cse7 .cse8 (store (select .cse7 .cse8) (+ 8 |ULTIMATE.start_main_#t~mem17#1.offset|) |c_ULTIMATE.start_main_~n~0#1.base|)))) (store .cse6 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2 |v_ULTIMATE.start_main_#t~malloc21#1.base_26|))))) (store .cse5 |v_ULTIMATE.start_main_#t~malloc21#1.base_26| (store (select .cse5 |v_ULTIMATE.start_main_#t~malloc21#1.base_26|) |ULTIMATE.start_main_#t~mem22#1.offset| 0))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1) (not (= (select |c_#valid| .cse8) 1)))))) is different from false [2021-11-23 02:51:59,494 INFO L354 Elim1Store]: treesize reduction 31052, result has 66.6 percent of original size [2021-11-23 02:51:59,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92844 treesize of output 123864 [2021-11-23 02:52:02,555 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem22#1.offset| Int) (|ULTIMATE.start_main_#t~mem24#1.offset| Int) (|ULTIMATE.start_main_#t~mem16#1.offset| Int) (|v_ULTIMATE.start_main_#t~malloc21#1.base_26| Int) (|ULTIMATE.start_main_#t~mem23#1.offset| Int) (|ULTIMATE.start_main_#t~mem17#1.offset| Int) (|ULTIMATE.start_main_#t~mem15#1.offset| Int)) (let ((.cse9 (let ((.cse10 (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset| |c_ULTIMATE.start_main_#t~malloc14#1.base|)))) (store .cse12 |c_ULTIMATE.start_main_#t~malloc14#1.base| (store (select .cse12 |c_ULTIMATE.start_main_#t~malloc14#1.base|) |ULTIMATE.start_main_#t~mem15#1.offset| 0))))) (let ((.cse11 (select (select .cse10 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (store .cse10 .cse11 (store (select .cse10 .cse11) (+ 4 |ULTIMATE.start_main_#t~mem16#1.offset|) 0)))))) (let ((.cse1 (select (select .cse9 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (let ((.cse0 (select (select (let ((.cse4 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse2 (let ((.cse5 (let ((.cse7 (let ((.cse8 (store .cse9 .cse1 (store (select .cse9 .cse1) (+ 8 |ULTIMATE.start_main_#t~mem17#1.offset|) |c_ULTIMATE.start_main_~n~0#1.base|)))) (store .cse8 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~n~0#1.base|) .cse4 |v_ULTIMATE.start_main_#t~malloc21#1.base_26|))))) (store .cse7 |v_ULTIMATE.start_main_#t~malloc21#1.base_26| (store (select .cse7 |v_ULTIMATE.start_main_#t~malloc21#1.base_26|) |ULTIMATE.start_main_#t~mem22#1.offset| 0))))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~n~0#1.base|) .cse4))) (store .cse5 .cse6 (store (select .cse5 .cse6) (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4) 0)))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse4))) (store .cse2 .cse3 (store (select .cse2 .cse3) (+ |ULTIMATE.start_main_#t~mem24#1.offset| 8) |c_ULTIMATE.start_main_~n~0#1.base|))))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))) (or (= .cse0 .cse1) (= .cse0 |v_ULTIMATE.start_main_#t~malloc21#1.base_26|) (= .cse1 |v_ULTIMATE.start_main_#t~malloc21#1.base_26|) (= |c_ULTIMATE.start_main_~n~0#1.base| .cse0) (= |c_ULTIMATE.start_main_~n~0#1.base| |v_ULTIMATE.start_main_#t~malloc21#1.base_26|)))))) is different from false [2021-11-23 02:52:25,051 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-23 02:52:25,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1675391649 treesize of output 1674892957