./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9 --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 b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 19:59:33,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:59:33,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:59:33,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:59:33,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:59:33,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:59:33,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:59:33,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:59:33,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:59:33,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:59:33,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:59:33,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:59:33,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:59:33,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:59:33,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:59:33,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:59:33,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:59:33,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:59:33,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:59:33,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:59:33,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:59:33,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:59:33,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:59:33,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:59:33,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:59:33,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:59:33,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:59:33,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:59:33,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:59:33,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:59:33,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:59:33,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:59:33,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:59:33,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:59:33,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:59:33,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:59:33,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:59:33,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:59:33,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:59:33,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:59:33,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:59:33,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-20 19:59:33,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:59:33,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:59:33,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:59:33,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:59:33,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:59:33,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:59:33,355 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:59:33,356 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:59:33,356 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:59:33,356 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:59:33,357 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:59:33,357 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:59:33,357 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:59:33,358 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:59:33,358 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:59:33,358 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:59:33,358 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:59:33,358 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:59:33,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 19:59:33,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 19:59:33,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:59:33,360 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:59:33,360 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 19:59:33,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:59:33,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:59:33,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:59:33,360 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 19:59:33,361 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 19:59:33,361 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 19:59:33,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:59:33,361 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 19:59:33,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:59:33,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:59:33,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:59:33,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:59:33,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:59:33,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:59:33,363 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:59:33,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:59:33,364 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:59:33,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:59:33,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:59:33,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d [2022-11-20 19:59:33,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:59:33,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:59:33,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:59:33,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:59:33,710 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:59:33,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i [2022-11-20 19:59:36,871 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:59:37,182 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:59:37,183 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i [2022-11-20 19:59:37,209 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/data/20fe39297/e71516e9046a4932b5003d3b589166dc/FLAG45d64d43c [2022-11-20 19:59:37,230 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/data/20fe39297/e71516e9046a4932b5003d3b589166dc [2022-11-20 19:59:37,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:59:37,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:59:37,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:59:37,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:59:37,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:59:37,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b49c2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37, skipping insertion in model container [2022-11-20 19:59:37,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:59:37,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:59:37,639 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2022-11-20 19:59:37,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:59:37,664 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:59:37,719 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2022-11-20 19:59:37,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:59:37,753 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:59:37,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37 WrapperNode [2022-11-20 19:59:37,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:59:37,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:59:37,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:59:37,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:59:37,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,820 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 111 [2022-11-20 19:59:37,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:59:37,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:59:37,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:59:37,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:59:37,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,847 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:59:37,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:59:37,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:59:37,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:59:37,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (1/1) ... [2022-11-20 19:59:37,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:59:37,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:59:37,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:59:37,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:59:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 19:59:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 19:59:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 19:59:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:59:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 19:59:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 19:59:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 19:59:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:59:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:59:37,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:59:38,087 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:59:38,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:59:38,490 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:59:38,552 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:59:38,552 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 19:59:38,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:59:38 BoogieIcfgContainer [2022-11-20 19:59:38,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:59:38,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:59:38,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:59:38,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:59:38,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:59:37" (1/3) ... [2022-11-20 19:59:38,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2450665d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:59:38, skipping insertion in model container [2022-11-20 19:59:38,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:59:37" (2/3) ... [2022-11-20 19:59:38,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2450665d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:59:38, skipping insertion in model container [2022-11-20 19:59:38,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:59:38" (3/3) ... [2022-11-20 19:59:38,571 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-1.i [2022-11-20 19:59:38,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:59:38,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2022-11-20 19:59:38,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:59:38,646 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d9aa877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:59:38,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2022-11-20 19:59:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 38 states have (on average 2.526315789473684) internal successors, (96), 83 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 19:59:38,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:38,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 19:59:38,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:38,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash 6700, now seen corresponding path program 1 times [2022-11-20 19:59:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:38,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683485086] [2022-11-20 19:59:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:38,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:38,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:38,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683485086] [2022-11-20 19:59:38,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683485086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:38,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:38,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:59:38,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787458903] [2022-11-20 19:59:38,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:38,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:59:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:59:38,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:59:38,990 INFO L87 Difference]: Start difference. First operand has 84 states, 38 states have (on average 2.526315789473684) internal successors, (96), 83 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-20 19:59:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:39,192 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2022-11-20 19:59:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:59:39,195 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 [2022-11-20 19:59:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:39,217 INFO L225 Difference]: With dead ends: 85 [2022-11-20 19:59:39,217 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 19:59:39,220 INFO L412 NwaCegarLoop]: 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 [2022-11-20 19:59:39,225 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 72 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:39,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 42 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:59:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 19:59:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2022-11-20 19:59:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 37 states have (on average 2.324324324324324) internal successors, (86), 79 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-11-20 19:59:39,272 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 2 [2022-11-20 19:59:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:39,273 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-11-20 19:59:39,274 INFO L496 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) [2022-11-20 19:59:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-11-20 19:59:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 19:59:39,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:39,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 19:59:39,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:59:39,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash 6701, now seen corresponding path program 1 times [2022-11-20 19:59:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:39,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609092438] [2022-11-20 19:59:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:39,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:39,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:39,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609092438] [2022-11-20 19:59:39,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609092438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:39,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:39,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:59:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824992014] [2022-11-20 19:59:39,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:39,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:59:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:59:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:59:39,449 INFO L87 Difference]: Start difference. First operand 80 states and 86 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) [2022-11-20 19:59:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:39,628 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2022-11-20 19:59:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:59:39,629 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 [2022-11-20 19:59:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:39,630 INFO L225 Difference]: With dead ends: 102 [2022-11-20 19:59:39,630 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 19:59:39,631 INFO L412 NwaCegarLoop]: 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 [2022-11-20 19:59:39,632 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 69 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:39,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 74 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:59:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 19:59:39,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2022-11-20 19:59:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 37 states have (on average 2.27027027027027) internal successors, (84), 77 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-11-20 19:59:39,640 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 2 [2022-11-20 19:59:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:39,641 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-11-20 19:59:39,641 INFO L496 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) [2022-11-20 19:59:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-11-20 19:59:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 19:59:39,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:39,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 19:59:39,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:59:39,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1897374237, now seen corresponding path program 1 times [2022-11-20 19:59:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:39,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254812345] [2022-11-20 19:59:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:39,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:39,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254812345] [2022-11-20 19:59:39,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254812345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:39,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:39,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:59:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129384489] [2022-11-20 19:59:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:59:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:39,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:59:39,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:59:39,844 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:40,008 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2022-11-20 19:59:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:59:40,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 19:59:40,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:40,014 INFO L225 Difference]: With dead ends: 79 [2022-11-20 19:59:40,015 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 19:59:40,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:59:40,021 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 104 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:40,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 24 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:59:40,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 19:59:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2022-11-20 19:59:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2022-11-20 19:59:40,036 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 6 [2022-11-20 19:59:40,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:40,036 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2022-11-20 19:59:40,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2022-11-20 19:59:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 19:59:40,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:40,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 19:59:40,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:59:40,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:40,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1897374238, now seen corresponding path program 1 times [2022-11-20 19:59:40,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:40,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355922440] [2022-11-20 19:59:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:40,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:40,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:40,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355922440] [2022-11-20 19:59:40,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355922440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:40,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:40,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:59:40,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390063353] [2022-11-20 19:59:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:40,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:59:40,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:40,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:59:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:59:40,344 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:40,580 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2022-11-20 19:59:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:59:40,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 19:59:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:40,582 INFO L225 Difference]: With dead ends: 93 [2022-11-20 19:59:40,582 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 19:59:40,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:59:40,583 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 102 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:40,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 47 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:59:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 19:59:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2022-11-20 19:59:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 83 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2022-11-20 19:59:40,589 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 6 [2022-11-20 19:59:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:40,589 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2022-11-20 19:59:40,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2022-11-20 19:59:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:59:40,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:40,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:40,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 19:59:40,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:40,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1984296698, now seen corresponding path program 1 times [2022-11-20 19:59:40,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:40,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393565651] [2022-11-20 19:59:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:40,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:40,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393565651] [2022-11-20 19:59:40,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393565651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:40,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:40,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:59:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390510325] [2022-11-20 19:59:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:40,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:59:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:59:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:59:40,691 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:40,835 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2022-11-20 19:59:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:59:40,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 19:59:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:40,836 INFO L225 Difference]: With dead ends: 83 [2022-11-20 19:59:40,836 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 19:59:40,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:59:40,837 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:40,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 79 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:59:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 19:59:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-20 19:59:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.6379310344827587) internal successors, (95), 82 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2022-11-20 19:59:40,842 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 8 [2022-11-20 19:59:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:40,843 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2022-11-20 19:59:40,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2022-11-20 19:59:40,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:59:40,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:40,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:40,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:59:40,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1984296697, now seen corresponding path program 1 times [2022-11-20 19:59:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:40,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937592848] [2022-11-20 19:59:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:41,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937592848] [2022-11-20 19:59:41,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937592848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:41,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:41,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:59:41,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460139023] [2022-11-20 19:59:41,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:41,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:59:41,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:59:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:59:41,068 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:41,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:41,244 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2022-11-20 19:59:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:59:41,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 19:59:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:41,245 INFO L225 Difference]: With dead ends: 82 [2022-11-20 19:59:41,245 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 19:59:41,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:59:41,246 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 8 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:41,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:59:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 19:59:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2022-11-20 19:59:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 74 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2022-11-20 19:59:41,250 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 8 [2022-11-20 19:59:41,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:41,251 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2022-11-20 19:59:41,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2022-11-20 19:59:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 19:59:41,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:41,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:41,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 19:59:41,252 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:41,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:41,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2000721996, now seen corresponding path program 1 times [2022-11-20 19:59:41,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:41,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694607685] [2022-11-20 19:59:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:41,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:41,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694607685] [2022-11-20 19:59:41,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694607685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:41,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:41,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:59:41,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618977621] [2022-11-20 19:59:41,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:41,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:59:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:59:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:59:41,485 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 5 states, 5 states have (on average 2.4) 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) [2022-11-20 19:59:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:41,625 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2022-11-20 19:59:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:59:41,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) 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 [2022-11-20 19:59:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:41,626 INFO L225 Difference]: With dead ends: 85 [2022-11-20 19:59:41,626 INFO L226 Difference]: Without dead ends: 85 [2022-11-20 19:59:41,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:59:41,627 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 17 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:41,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 141 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:59:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-20 19:59:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2022-11-20 19:59:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 80 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2022-11-20 19:59:41,632 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 12 [2022-11-20 19:59:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:41,632 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2022-11-20 19:59:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) 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) [2022-11-20 19:59:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2022-11-20 19:59:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 19:59:41,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:41,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:41,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 19:59:41,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:41,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:41,634 INFO L85 PathProgramCache]: Analyzing trace with hash -613471756, now seen corresponding path program 1 times [2022-11-20 19:59:41,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:41,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887999929] [2022-11-20 19:59:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:41,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:41,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:41,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887999929] [2022-11-20 19:59:41,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887999929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:59:41,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898723450] [2022-11-20 19:59:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:41,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:59:41,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:59:41,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:59:41,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:59:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:42,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 19:59:42,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:59:42,215 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:42,222 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:42,313 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 19:59:42,313 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:42,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 19:59:42,387 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:42,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 19:59:42,494 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 13 [2022-11-20 19:59:42,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2022-11-20 19:59:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:42,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:59:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:45,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898723450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:59:45,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1134395111] [2022-11-20 19:59:45,031 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-20 19:59:45,031 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:59:45,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:59:45,042 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:59:45,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:59:45,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,095 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:45,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,125 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:45,140 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:45,150 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:45,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,178 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 19:59:45,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,195 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 30 [2022-11-20 19:59:45,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,210 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 19:59:45,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,275 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:45,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 19:59:45,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 19:59:45,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,347 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 19:59:45,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,416 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 47 [2022-11-20 19:59:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:45,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 19:59:45,520 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:59:47,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1134395111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:47,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:59:47,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 5, 5] total 24 [2022-11-20 19:59:47,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079727344] [2022-11-20 19:59:47,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:47,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 19:59:47,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:47,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 19:59:47,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2022-11-20 19:59:47,213 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2022-11-20 19:59:47,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:47,824 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2022-11-20 19:59:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 19:59:47,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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 [2022-11-20 19:59:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:47,827 INFO L225 Difference]: With dead ends: 88 [2022-11-20 19:59:47,827 INFO L226 Difference]: Without dead ends: 88 [2022-11-20 19:59:47,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2022-11-20 19:59:47,828 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:47,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 106 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-20 19:59:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2022-11-20 19:59:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.523076923076923) internal successors, (99), 85 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2022-11-20 19:59:47,833 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 14 [2022-11-20 19:59:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:47,833 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2022-11-20 19:59:47,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2022-11-20 19:59:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2022-11-20 19:59:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 19:59:47,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:47,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:47,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:59:48,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:59:48,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1837810092, now seen corresponding path program 1 times [2022-11-20 19:59:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:48,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624794327] [2022-11-20 19:59:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:48,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:48,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:48,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624794327] [2022-11-20 19:59:48,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624794327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:48,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:48,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:59:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664886920] [2022-11-20 19:59:48,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:59:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:48,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:59:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:59:48,280 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:48,539 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2022-11-20 19:59:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:59:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 19:59:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:48,541 INFO L225 Difference]: With dead ends: 122 [2022-11-20 19:59:48,541 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 19:59:48,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:59:48,544 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 165 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:48,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 49 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:59:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 19:59:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 91. [2022-11-20 19:59:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 90 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2022-11-20 19:59:48,561 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 15 [2022-11-20 19:59:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:48,562 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2022-11-20 19:59:48,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2022-11-20 19:59:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 19:59:48,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:48,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:48,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 19:59:48,564 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1837810091, now seen corresponding path program 1 times [2022-11-20 19:59:48,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:48,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994695469] [2022-11-20 19:59:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:48,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:48,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:48,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994695469] [2022-11-20 19:59:48,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994695469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:48,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:48,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:59:48,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720801448] [2022-11-20 19:59:48,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:48,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:59:48,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:59:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:59:48,933 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:49,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:49,383 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2022-11-20 19:59:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 19:59:49,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 19:59:49,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:49,385 INFO L225 Difference]: With dead ends: 133 [2022-11-20 19:59:49,385 INFO L226 Difference]: Without dead ends: 133 [2022-11-20 19:59:49,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:49,386 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 155 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:49,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 120 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:59:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-20 19:59:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2022-11-20 19:59:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 110 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 141 transitions. [2022-11-20 19:59:49,397 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 141 transitions. Word has length 15 [2022-11-20 19:59:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:49,397 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 141 transitions. [2022-11-20 19:59:49,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 141 transitions. [2022-11-20 19:59:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 19:59:49,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:49,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:49,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 19:59:49,400 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:49,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1137460572, now seen corresponding path program 1 times [2022-11-20 19:59:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:49,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301496726] [2022-11-20 19:59:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:49,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:49,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:49,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301496726] [2022-11-20 19:59:49,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301496726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:49,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:49,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:59:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505394996] [2022-11-20 19:59:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:59:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:59:49,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:59:49,523 INFO L87 Difference]: Start difference. First operand 111 states and 141 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) 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) [2022-11-20 19:59:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:49,749 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2022-11-20 19:59:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:59:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) 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 [2022-11-20 19:59:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:49,750 INFO L225 Difference]: With dead ends: 135 [2022-11-20 19:59:49,750 INFO L226 Difference]: Without dead ends: 135 [2022-11-20 19:59:49,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:59:49,751 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 157 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:49,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 123 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:59:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-20 19:59:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2022-11-20 19:59:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 91 states have (on average 1.5054945054945055) internal successors, (137), 110 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2022-11-20 19:59:49,756 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 16 [2022-11-20 19:59:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:49,757 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2022-11-20 19:59:49,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) 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) [2022-11-20 19:59:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2022-11-20 19:59:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 19:59:49,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:49,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:49,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 19:59:49,759 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash -903936647, now seen corresponding path program 1 times [2022-11-20 19:59:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:49,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324134482] [2022-11-20 19:59:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:50,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:50,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324134482] [2022-11-20 19:59:50,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324134482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:50,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:50,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 19:59:50,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654914407] [2022-11-20 19:59:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:50,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 19:59:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:50,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 19:59:50,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:59:50,171 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:50,648 INFO L93 Difference]: Finished difference Result 151 states and 170 transitions. [2022-11-20 19:59:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 19:59:50,649 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 19:59:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:50,650 INFO L225 Difference]: With dead ends: 151 [2022-11-20 19:59:50,650 INFO L226 Difference]: Without dead ends: 151 [2022-11-20 19:59:50,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-20 19:59:50,651 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 110 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:50,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 207 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-20 19:59:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 127. [2022-11-20 19:59:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 107 states have (on average 1.4953271028037383) internal successors, (160), 126 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 160 transitions. [2022-11-20 19:59:50,658 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 160 transitions. Word has length 17 [2022-11-20 19:59:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:50,658 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 160 transitions. [2022-11-20 19:59:50,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 160 transitions. [2022-11-20 19:59:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 19:59:50,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:50,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:50,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 19:59:50,661 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash -348229610, now seen corresponding path program 1 times [2022-11-20 19:59:50,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:50,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444161234] [2022-11-20 19:59:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:50,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:50,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:50,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444161234] [2022-11-20 19:59:50,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444161234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:50,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:50,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 19:59:50,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543156621] [2022-11-20 19:59:50,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:50,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:59:50,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:59:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:59:50,927 INFO L87 Difference]: Start difference. First operand 127 states and 160 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2022-11-20 19:59:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:51,207 INFO L93 Difference]: Finished difference Result 161 states and 187 transitions. [2022-11-20 19:59:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:59:51,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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 [2022-11-20 19:59:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:51,209 INFO L225 Difference]: With dead ends: 161 [2022-11-20 19:59:51,209 INFO L226 Difference]: Without dead ends: 161 [2022-11-20 19:59:51,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 19:59:51,209 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 96 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:51,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 162 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:59:51,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-20 19:59:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 130. [2022-11-20 19:59:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 110 states have (on average 1.481818181818182) internal successors, (163), 129 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) [2022-11-20 19:59:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2022-11-20 19:59:51,214 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 18 [2022-11-20 19:59:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:51,216 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2022-11-20 19:59:51,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2022-11-20 19:59:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2022-11-20 19:59:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 19:59:51,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:51,219 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:59:51,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 19:59:51,219 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 19:59:51,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1366635571, now seen corresponding path program 1 times [2022-11-20 19:59:51,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:51,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856357449] [2022-11-20 19:59:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:51,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:51,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:51,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856357449] [2022-11-20 19:59:51,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856357449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:59:51,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057022425] [2022-11-20 19:59:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:51,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:59:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:59:51,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:59:51,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:59:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:51,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 19:59:51,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:59:51,623 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:51,703 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 19:59:51,703 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:51,753 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:51,835 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 19:59:51,836 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 29 [2022-11-20 19:59:51,868 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 19:59:51,868 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 29 [2022-11-20 19:59:51,995 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 13 [2022-11-20 19:59:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:52,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:59:52,088 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_377 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_377) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2022-11-20 19:59:52,103 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_377 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_377) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2022-11-20 19:59:52,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 19:59:52,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2022-11-20 19:59:52,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 19:59:52,122 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 37 [2022-11-20 19:59:52,127 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 5 [2022-11-20 19:59:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:59:56,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057022425] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:59:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [782866976] [2022-11-20 19:59:56,377 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-20 19:59:56,378 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:59:56,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:59:56,378 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:59:56,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:59:56,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,401 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:56,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,421 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:56,430 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:56,437 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:56,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,456 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 30 [2022-11-20 19:59:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,471 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 19:59:56,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,481 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 19:59:56,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,515 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:56,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 19:59:56,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-20 19:59:56,580 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-20 19:59:56,624 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-20 19:59:56,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2022-11-20 19:59:56,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:56,648 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 19:59:56,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2022-11-20 19:59:56,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,664 INFO L350 Elim1Store]: Elim1 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 76 treesize of output 40 [2022-11-20 19:59:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 19:59:56,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,710 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 45 [2022-11-20 19:59:56,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-20 19:59:56,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-20 19:59:56,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,816 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 21 [2022-11-20 19:59:56,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,837 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 45 [2022-11-20 19:59:56,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:56,854 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 21 [2022-11-20 19:59:57,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:57,118 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-20 19:59:57,118 INFO L350 Elim1Store]: Elim1 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 460 treesize of output 342 [2022-11-20 19:59:57,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:57,170 INFO L321 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2022-11-20 19:59:57,171 INFO L350 Elim1Store]: Elim1 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 460 treesize of output 431 [2022-11-20 19:59:57,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:57,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:57,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:57,259 INFO L321 Elim1Store]: treesize reduction 122, result has 26.1 percent of original size [2022-11-20 19:59:57,260 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 454 treesize of output 456 [2022-11-20 19:59:57,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:57,415 INFO L321 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2022-11-20 19:59:57,416 INFO L350 Elim1Store]: Elim1 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 460 treesize of output 357 [2022-11-20 19:59:57,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:57,482 INFO L321 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2022-11-20 19:59:57,482 INFO L350 Elim1Store]: Elim1 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 412 treesize of output 406 [2022-11-20 19:59:57,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:57,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:57,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:57,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:57,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:57,578 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-20 19:59:57,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 409 treesize of output 395 [2022-11-20 19:59:57,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:57,865 INFO L321 Elim1Store]: treesize reduction 156, result has 13.8 percent of original size [2022-11-20 19:59:57,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 430 treesize of output 426 [2022-11-20 19:59:57,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:58,055 INFO L321 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2022-11-20 19:59:58,055 INFO L350 Elim1Store]: Elim1 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 512 treesize of output 429 [2022-11-20 19:59:58,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:58,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:58,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:58,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:58,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:58,185 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-20 19:59:58,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 526 treesize of output 512 [2022-11-20 19:59:58,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:59:58,307 INFO L321 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2022-11-20 19:59:58,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 520 treesize of output 510 [2022-11-20 19:59:58,560 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 19:59:58,560 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 19:59:58,592 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 19:59:58,593 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 19:59:58,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 19:59:58,627 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 19:59:58,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 19:59:58,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 19:59:58,662 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 19:59:58,663 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:58,690 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 19:59:58,691 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:58,705 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 19:59:58,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 19:59:58,722 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 19:59:58,766 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 19:59:58,766 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 19:59:58,800 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 19:59:58,801 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 19:59:58,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 19:59:58,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 19:59:58,839 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 19:59:58,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 19:59:59,530 INFO L321 Elim1Store]: treesize reduction 68, result has 41.9 percent of original size [2022-11-20 19:59:59,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 191 treesize of output 228 [2022-11-20 19:59:59,965 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 19:59:59,966 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:00,056 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:00,057 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:00,137 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:00,138 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:00,213 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:00,213 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:00,264 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:00,264 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:00,294 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:00,294 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:00,324 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:00,324 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:00,382 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:00,382 INFO L350 Elim1Store]: Elim1 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 146 treesize of output 148 [2022-11-20 20:00:00,861 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:00:02,379 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3053#(and (not (= (select |#valid| |ULTIMATE.start_main_~x~0#1.base|) 1)) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:00:02,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:00:02,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:00:02,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2022-11-20 20:00:02,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372053244] [2022-11-20 20:00:02,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:00:02,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 20:00:02,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 20:00:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=963, Unknown=2, NotChecked=130, Total=1260 [2022-11-20 20:00:02,381 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:05,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:05,741 INFO L93 Difference]: Finished difference Result 295 states and 348 transitions. [2022-11-20 20:00:05,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 20:00:05,741 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 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 [2022-11-20 20:00:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:05,742 INFO L225 Difference]: With dead ends: 295 [2022-11-20 20:00:05,743 INFO L226 Difference]: Without dead ends: 295 [2022-11-20 20:00:05,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=319, Invalid=1943, Unknown=2, NotChecked=186, Total=2450 [2022-11-20 20:00:05,744 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 501 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 744 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:05,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 358 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 783 Invalid, 0 Unknown, 744 Unchecked, 0.8s Time] [2022-11-20 20:00:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-20 20:00:05,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 169. [2022-11-20 20:00:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 149 states have (on average 1.516778523489933) internal successors, (226), 168 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 226 transitions. [2022-11-20 20:00:05,750 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 226 transitions. Word has length 18 [2022-11-20 20:00:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:05,750 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 226 transitions. [2022-11-20 20:00:05,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:05,751 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 226 transitions. [2022-11-20 20:00:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 20:00:05,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:05,751 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:00:05,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:00:05,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 20:00:05,957 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 20:00:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:05,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1366635570, now seen corresponding path program 1 times [2022-11-20 20:00:05,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:05,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498158731] [2022-11-20 20:00:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:06,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:06,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498158731] [2022-11-20 20:00:06,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498158731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:00:06,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647454713] [2022-11-20 20:00:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:06,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:00:06,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:00:06,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:00:06,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:00:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:06,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 20:00:06,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:00:06,572 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:06,659 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 20:00:06,659 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:06,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:00:06,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:06,728 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:06,823 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 20:00:06,823 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-11-20 20:00:06,829 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 20:00:06,847 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 20:00:06,847 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 29 [2022-11-20 20:00:06,895 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 20:00:06,896 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 37 [2022-11-20 20:00:06,901 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 20 [2022-11-20 20:00:07,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 20:00:07,055 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 13 [2022-11-20 20:00:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:07,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:00:07,192 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_455 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_455) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_454 (Array Int Int)) (v_ArrVal_455 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_455) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_454) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2022-11-20 20:00:07,213 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_454 (Array Int Int)) (v_ArrVal_455 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_455) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_454) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_455 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_455) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2022-11-20 20:00:07,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:07,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-11-20 20:00:07,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:07,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-20 20:00:07,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:07,244 INFO L350 Elim1Store]: Elim1 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 52 treesize of output 55 [2022-11-20 20:00:07,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:07,258 INFO L350 Elim1Store]: Elim1 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 82 treesize of output 81 [2022-11-20 20:00:07,264 INFO L350 Elim1Store]: Elim1 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 66 treesize of output 62 [2022-11-20 20:00:07,271 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 28 [2022-11-20 20:00:07,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:07,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 20:00:07,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:07,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-20 20:00:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:07,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647454713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:00:07,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1113128329] [2022-11-20 20:00:07,494 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-20 20:00:07,494 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:00:07,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:00:07,495 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:00:07,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:00:07,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,523 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:07,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,540 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:07,550 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:07,556 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:07,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,575 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 30 [2022-11-20 20:00:07,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,588 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 20:00:07,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,619 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 20:00:07,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,663 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:07,687 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-20 20:00:07,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-20 20:00:07,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 20:00:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,766 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-20 20:00:07,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2022-11-20 20:00:07,796 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-20 20:00:07,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2022-11-20 20:00:07,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,813 INFO L350 Elim1Store]: Elim1 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 76 treesize of output 40 [2022-11-20 20:00:07,850 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:00:07,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-20 20:00:07,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:07,878 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 20:00:07,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2022-11-20 20:00:07,905 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 20:00:07,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-20 20:00:07,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2022-11-20 20:00:07,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:07,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:08,001 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 20:00:08,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2022-11-20 20:00:08,033 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:00:08,035 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 21 [2022-11-20 20:00:08,068 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:00:08,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 86 [2022-11-20 20:00:08,278 INFO L321 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2022-11-20 20:00:08,278 INFO L350 Elim1Store]: Elim1 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 506 treesize of output 364 [2022-11-20 20:00:08,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:08,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:08,372 INFO L321 Elim1Store]: treesize reduction 188, result has 20.7 percent of original size [2022-11-20 20:00:08,373 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 502 [2022-11-20 20:00:08,430 INFO L321 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2022-11-20 20:00:08,430 INFO L350 Elim1Store]: Elim1 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 517 treesize of output 451 [2022-11-20 20:00:08,688 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 20:00:08,689 INFO L350 Elim1Store]: Elim1 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 968 treesize of output 705 [2022-11-20 20:00:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:08,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:08,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:08,817 INFO L321 Elim1Store]: treesize reduction 244, result has 14.4 percent of original size [2022-11-20 20:00:08,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 837 treesize of output 795 [2022-11-20 20:00:08,875 INFO L321 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2022-11-20 20:00:08,876 INFO L350 Elim1Store]: Elim1 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 847 treesize of output 784 [2022-11-20 20:00:09,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:09,424 INFO L321 Elim1Store]: treesize reduction 310, result has 11.9 percent of original size [2022-11-20 20:00:09,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 1530 treesize of output 1427 [2022-11-20 20:00:09,900 INFO L321 Elim1Store]: treesize reduction 92, result has 25.2 percent of original size [2022-11-20 20:00:09,901 INFO L350 Elim1Store]: Elim1 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 1908 treesize of output 1409 [2022-11-20 20:00:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:09,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:09,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:09,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:10,104 INFO L321 Elim1Store]: treesize reduction 244, result has 14.4 percent of original size [2022-11-20 20:00:10,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 1754 treesize of output 1656 [2022-11-20 20:00:10,258 INFO L321 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2022-11-20 20:00:10,258 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 1771 treesize of output 1704 [2022-11-20 20:00:10,469 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:10,469 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:10,495 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:10,496 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:10,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:10,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:10,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:10,535 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:10,558 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 20:00:10,558 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:10,581 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:10,582 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:10,594 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:10,600 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:10,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 20:00:10,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:10,651 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:10,651 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:10,677 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:10,678 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:10,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:10,705 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:10,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:11,215 INFO L321 Elim1Store]: treesize reduction 68, result has 41.9 percent of original size [2022-11-20 20:00:11,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 191 treesize of output 228 [2022-11-20 20:00:11,629 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:11,630 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:11,671 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:11,672 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:11,719 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:11,719 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:11,800 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:11,800 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:11,816 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:00:11,854 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:11,855 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:11,897 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:11,898 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:11,940 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:11,941 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:11,972 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:11,972 INFO L350 Elim1Store]: Elim1 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 135 treesize of output 1 [2022-11-20 20:00:12,019 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:12,019 INFO L350 Elim1Store]: Elim1 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 146 treesize of output 148 [2022-11-20 20:00:12,438 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:00:13,826 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3696#(and (or (not (<= (+ |ULTIMATE.start_main_~x~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~x~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~x~0#1.offset|))) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:00:13,826 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:00:13,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:00:13,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 24 [2022-11-20 20:00:13,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161922678] [2022-11-20 20:00:13,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:00:13,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 20:00:13,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 20:00:13,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1117, Unknown=2, NotChecked=138, Total=1406 [2022-11-20 20:00:13,828 INFO L87 Difference]: Start difference. First operand 169 states and 226 transitions. Second operand has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:17,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:17,606 INFO L93 Difference]: Finished difference Result 251 states and 303 transitions. [2022-11-20 20:00:17,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 20:00:17,607 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 20:00:17,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:17,608 INFO L225 Difference]: With dead ends: 251 [2022-11-20 20:00:17,608 INFO L226 Difference]: Without dead ends: 251 [2022-11-20 20:00:17,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=373, Invalid=2285, Unknown=2, NotChecked=202, Total=2862 [2022-11-20 20:00:17,610 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 305 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:17,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 346 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1048 Invalid, 0 Unknown, 310 Unchecked, 1.0s Time] [2022-11-20 20:00:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-20 20:00:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 179. [2022-11-20 20:00:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 163 states have (on average 1.4539877300613497) internal successors, (237), 178 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-11-20 20:00:17,619 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 18 [2022-11-20 20:00:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:17,620 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-11-20 20:00:17,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:17,620 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-11-20 20:00:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 20:00:17,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:17,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:00:17,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:00:17,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:00:17,823 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 20:00:17,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2089729138, now seen corresponding path program 1 times [2022-11-20 20:00:17,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:17,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39543746] [2022-11-20 20:00:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:18,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:18,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39543746] [2022-11-20 20:00:18,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39543746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:00:18,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:00:18,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:00:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289305413] [2022-11-20 20:00:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:00:18,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:00:18,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:18,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:00:18,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:00:18,107 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:18,454 INFO L93 Difference]: Finished difference Result 198 states and 255 transitions. [2022-11-20 20:00:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:00:18,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 20:00:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:18,455 INFO L225 Difference]: With dead ends: 198 [2022-11-20 20:00:18,455 INFO L226 Difference]: Without dead ends: 198 [2022-11-20 20:00:18,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:00:18,456 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 51 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:18,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 128 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:00:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-20 20:00:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2022-11-20 20:00:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 178 states have (on average 1.4213483146067416) internal successors, (253), 193 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 253 transitions. [2022-11-20 20:00:18,463 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 253 transitions. Word has length 19 [2022-11-20 20:00:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:18,464 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 253 transitions. [2022-11-20 20:00:18,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 253 transitions. [2022-11-20 20:00:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 20:00:18,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:18,465 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:00:18,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 20:00:18,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 20:00:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1099095451, now seen corresponding path program 1 times [2022-11-20 20:00:18,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:18,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591830614] [2022-11-20 20:00:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:18,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:18,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:18,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591830614] [2022-11-20 20:00:18,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591830614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:00:18,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488700452] [2022-11-20 20:00:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:18,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:00:18,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:00:18,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:00:18,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:00:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:18,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 20:00:18,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:00:18,949 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:18,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:18,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:19,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:19,025 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:19,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:19,037 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:19,097 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 20:00:19,097 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:19,142 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-20 20:00:19,155 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-20 20:00:19,172 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-20 20:00:19,177 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:19,439 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-20 20:00:19,440 INFO L350 Elim1Store]: Elim1 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 61 treesize of output 35 [2022-11-20 20:00:19,450 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 20:00:19,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-20 20:00:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:19,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:00:19,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:19,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-11-20 20:00:19,563 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:19,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-11-20 20:00:19,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:19,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 20:00:19,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-20 20:00:19,942 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 20:00:19,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 20:00:19,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:19,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 20:00:19,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-20 20:00:19,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:19,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2022-11-20 20:00:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:20,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488700452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:00:20,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1088449062] [2022-11-20 20:00:20,070 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 20:00:20,071 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:00:20,071 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:00:20,071 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:00:20,071 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:00:20,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,094 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:20,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,114 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:20,123 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:20,130 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:20,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,148 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 20:00:20,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,159 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 20:00:20,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,168 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 30 [2022-11-20 20:00:20,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,212 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:20,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 20:00:20,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,251 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:20,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-20 20:00:20,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 20:00:20,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,307 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 47 [2022-11-20 20:00:20,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:20,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 20:00:20,423 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:00:22,536 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4709#(and (not (= (select |#valid| |ULTIMATE.start_main_~x~0#1.base|) 1)) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (or (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (not (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:00:22,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:00:22,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:00:22,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2022-11-20 20:00:22,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217839118] [2022-11-20 20:00:22,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:00:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 20:00:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:22,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 20:00:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=814, Unknown=8, NotChecked=0, Total=992 [2022-11-20 20:00:22,538 INFO L87 Difference]: Start difference. First operand 194 states and 253 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:23,175 INFO L93 Difference]: Finished difference Result 201 states and 253 transitions. [2022-11-20 20:00:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:00:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 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 [2022-11-20 20:00:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:23,177 INFO L225 Difference]: With dead ends: 201 [2022-11-20 20:00:23,177 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 20:00:23,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=222, Invalid=1102, Unknown=8, NotChecked=0, Total=1332 [2022-11-20 20:00:23,178 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:23,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 238 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 440 Invalid, 0 Unknown, 46 Unchecked, 0.5s Time] [2022-11-20 20:00:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 20:00:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 191. [2022-11-20 20:00:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 175 states have (on average 1.4) internal successors, (245), 190 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 245 transitions. [2022-11-20 20:00:23,183 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 245 transitions. Word has length 19 [2022-11-20 20:00:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:23,183 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 245 transitions. [2022-11-20 20:00:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 245 transitions. [2022-11-20 20:00:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 20:00:23,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:23,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:00:23,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:00:23,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 20:00:23,384 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 20:00:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -356758379, now seen corresponding path program 1 times [2022-11-20 20:00:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316048350] [2022-11-20 20:00:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:23,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:23,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316048350] [2022-11-20 20:00:23,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316048350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:00:23,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:00:23,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:00:23,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272962152] [2022-11-20 20:00:23,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:00:23,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:00:23,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:23,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:00:23,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:00:23,457 INFO L87 Difference]: Start difference. First operand 191 states and 245 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:23,578 INFO L93 Difference]: Finished difference Result 194 states and 243 transitions. [2022-11-20 20:00:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:00:23,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-20 20:00:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:23,579 INFO L225 Difference]: With dead ends: 194 [2022-11-20 20:00:23,579 INFO L226 Difference]: Without dead ends: 194 [2022-11-20 20:00:23,580 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:00:23,580 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:23,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 51 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:00:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-20 20:00:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2022-11-20 20:00:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 192 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 242 transitions. [2022-11-20 20:00:23,587 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 242 transitions. Word has length 22 [2022-11-20 20:00:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:23,587 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 242 transitions. [2022-11-20 20:00:23,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 242 transitions. [2022-11-20 20:00:23,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 20:00:23,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:23,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:00:23,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 20:00:23,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 20:00:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:23,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1853567188, now seen corresponding path program 2 times [2022-11-20 20:00:23,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:23,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605539528] [2022-11-20 20:00:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:23,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:24,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605539528] [2022-11-20 20:00:24,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605539528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:00:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850608602] [2022-11-20 20:00:24,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:00:24,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:00:24,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:00:24,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:00:24,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:00:24,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:00:24,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:00:24,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 20:00:24,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:00:24,265 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:24,345 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 20:00:24,346 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:24,395 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:24,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:24,490 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 20:00:24,490 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-11-20 20:00:24,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:24,502 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-11-20 20:00:24,529 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-20 20:00:24,529 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 41 [2022-11-20 20:00:24,536 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-20 20:00:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:24,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:00:24,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:24,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2022-11-20 20:00:24,980 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:24,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-20 20:00:24,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:24,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-20 20:00:25,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:25,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2022-11-20 20:00:25,268 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:25,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2022-11-20 20:00:25,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:25,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2022-11-20 20:00:25,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:25,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 61 [2022-11-20 20:00:25,555 INFO L321 Elim1Store]: treesize reduction 30, result has 83.9 percent of original size [2022-11-20 20:00:25,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 174 treesize of output 285 [2022-11-20 20:00:25,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:25,620 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 196 treesize of output 222 [2022-11-20 20:00:25,658 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:25,658 INFO L350 Elim1Store]: Elim1 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 133 treesize of output 119 [2022-11-20 20:00:41,402 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 20:00:41,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 1 [2022-11-20 20:00:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:41,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850608602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:00:41,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [97107872] [2022-11-20 20:00:41,513 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-20 20:00:41,514 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:00:41,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:00:41,514 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:00:41,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:00:41,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,534 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:41,548 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:41,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,558 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:41,566 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:41,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,581 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 20:00:41,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,591 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 30 [2022-11-20 20:00:41,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,604 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 20:00:41,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,635 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:41,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-20 20:00:41,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 20:00:41,686 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-20 20:00:41,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,727 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-20 20:00:41,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2022-11-20 20:00:41,753 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-20 20:00:41,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 40 [2022-11-20 20:00:41,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,764 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 14 [2022-11-20 20:00:41,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,801 INFO L321 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-20 20:00:41,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 45 [2022-11-20 20:00:41,829 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:00:41,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-20 20:00:41,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,842 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 21 [2022-11-20 20:00:41,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2022-11-20 20:00:41,921 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:00:41,921 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 21 [2022-11-20 20:00:41,945 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:00:41,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 134 treesize of output 93 [2022-11-20 20:00:41,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:41,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-20 20:00:42,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:42,129 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-20 20:00:42,130 INFO L350 Elim1Store]: Elim1 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 453 treesize of output 335 [2022-11-20 20:00:42,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:42,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:42,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:42,244 INFO L321 Elim1Store]: treesize reduction 122, result has 26.1 percent of original size [2022-11-20 20:00:42,245 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 447 treesize of output 449 [2022-11-20 20:00:42,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:42,302 INFO L321 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2022-11-20 20:00:42,303 INFO L350 Elim1Store]: Elim1 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 445 treesize of output 416 [2022-11-20 20:00:42,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:42,431 INFO L321 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2022-11-20 20:00:42,432 INFO L350 Elim1Store]: Elim1 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 453 treesize of output 350 [2022-11-20 20:00:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:42,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:42,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:42,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:42,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:42,545 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-20 20:00:42,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 418 treesize of output 404 [2022-11-20 20:00:42,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:42,617 INFO L321 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2022-11-20 20:00:42,618 INFO L350 Elim1Store]: Elim1 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 405 treesize of output 399 [2022-11-20 20:00:42,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:42,921 INFO L321 Elim1Store]: treesize reduction 156, result has 13.8 percent of original size [2022-11-20 20:00:42,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 776 treesize of output 746 [2022-11-20 20:00:43,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:43,161 INFO L321 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2022-11-20 20:00:43,162 INFO L350 Elim1Store]: Elim1 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 935 treesize of output 776 [2022-11-20 20:00:43,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:43,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:43,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:43,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:43,319 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-20 20:00:43,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 965 treesize of output 923 [2022-11-20 20:00:43,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:43,428 INFO L321 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2022-11-20 20:00:43,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 959 treesize of output 929 [2022-11-20 20:00:43,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:43,597 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:43,598 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:43,629 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:43,629 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:43,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:43,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:43,666 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:43,698 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:43,698 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:43,707 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:43,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 20:00:43,728 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:43,734 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:43,778 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:43,778 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:43,810 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:43,811 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:43,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:43,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:43,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:43,842 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:44,294 INFO L321 Elim1Store]: treesize reduction 68, result has 41.9 percent of original size [2022-11-20 20:00:44,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 191 treesize of output 228 [2022-11-20 20:00:44,740 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:44,741 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:44,767 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:44,767 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:44,836 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:44,837 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:44,873 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:44,874 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:44,950 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:44,951 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:45,000 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:45,000 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:45,038 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:00:45,069 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:45,069 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:45,101 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:45,102 INFO L350 Elim1Store]: Elim1 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 1 [2022-11-20 20:00:45,140 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:00:45,157 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:00:45,191 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 20:00:45,191 INFO L350 Elim1Store]: Elim1 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 135 treesize of output 1 [2022-11-20 20:00:45,242 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:45,242 INFO L350 Elim1Store]: Elim1 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 211 treesize of output 211 [2022-11-20 20:00:45,504 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:00:47,101 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5670#(and (not (= (select |#valid| |ULTIMATE.start_main_~x~0#1.base|) 1)) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:00:47,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:00:47,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:00:47,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 25 [2022-11-20 20:00:47,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166718766] [2022-11-20 20:00:47,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:00:47,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 20:00:47,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:47,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 20:00:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1245, Unknown=24, NotChecked=0, Total=1406 [2022-11-20 20:00:47,104 INFO L87 Difference]: Start difference. First operand 193 states and 242 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:48,406 INFO L93 Difference]: Finished difference Result 241 states and 283 transitions. [2022-11-20 20:00:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:00:48,407 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 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 22 [2022-11-20 20:00:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:48,408 INFO L225 Difference]: With dead ends: 241 [2022-11-20 20:00:48,408 INFO L226 Difference]: Without dead ends: 241 [2022-11-20 20:00:48,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=232, Invalid=1811, Unknown=27, NotChecked=0, Total=2070 [2022-11-20 20:00:48,409 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 209 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:48,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 451 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 932 Invalid, 0 Unknown, 147 Unchecked, 0.9s Time] [2022-11-20 20:00:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-20 20:00:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 192. [2022-11-20 20:00:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 176 states have (on average 1.3579545454545454) internal successors, (239), 191 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2022-11-20 20:00:48,415 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 22 [2022-11-20 20:00:48,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:48,415 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2022-11-20 20:00:48,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:48,416 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2022-11-20 20:00:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 20:00:48,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:48,416 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:00:48,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:00:48,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:00:48,631 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-20 20:00:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1518029056, now seen corresponding path program 1 times [2022-11-20 20:00:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:48,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171463006] [2022-11-20 20:00:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:49,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:49,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171463006] [2022-11-20 20:00:49,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171463006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:00:49,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820171956] [2022-11-20 20:00:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:49,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:00:49,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:00:49,375 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:00:49,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c3dcebf-d5fb-4840-bda5-13754d60151b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:00:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:49,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-20 20:00:49,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:00:49,532 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:49,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:49,619 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 20:00:49,619 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:49,680 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:49,693 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:49,750 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 8 [2022-11-20 20:00:49,771 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-20 20:00:49,782 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-20 20:00:49,833 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 20:00:49,833 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:49,874 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-11-20 20:00:49,892 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:49,899 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 20 [2022-11-20 20:00:49,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:50,016 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 15 [2022-11-20 20:00:50,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2022-11-20 20:00:50,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 20:00:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:50,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:00:50,462 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 20:00:50,462 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 12 [2022-11-20 20:00:50,658 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:50,658 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-20 20:00:50,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:00:50,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 39 treesize of output 27 [2022-11-20 20:00:50,670 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2022-11-20 20:00:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:50,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820171956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:00:50,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [94367262] [2022-11-20 20:00:50,712 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-20 20:00:50,713 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:00:50,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:00:50,713 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:00:50,713 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:00:50,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,730 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:50,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,749 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:50,756 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:50,763 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:50,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,789 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 30 [2022-11-20 20:00:50,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,798 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 20:00:50,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,807 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 11 [2022-11-20 20:00:50,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,838 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:50,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-20 20:00:50,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 20:00:50,883 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 11 [2022-11-20 20:00:50,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,918 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-20 20:00:50,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2022-11-20 20:00:50,942 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-20 20:00:50,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2022-11-20 20:00:50,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:50,958 INFO L350 Elim1Store]: Elim1 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 76 treesize of output 40 [2022-11-20 20:00:50,990 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 20:00:50,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-20 20:00:51,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-20 20:00:51,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 20:00:51,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2022-11-20 20:00:51,113 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 20:00:51,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 86 [2022-11-20 20:00:51,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,137 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 45 [2022-11-20 20:00:51,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,150 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 21 [2022-11-20 20:00:51,314 INFO L321 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2022-11-20 20:00:51,315 INFO L350 Elim1Store]: Elim1 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 506 treesize of output 364 [2022-11-20 20:00:51,367 INFO L321 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2022-11-20 20:00:51,368 INFO L350 Elim1Store]: Elim1 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 506 treesize of output 440 [2022-11-20 20:00:51,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,464 INFO L321 Elim1Store]: treesize reduction 188, result has 20.7 percent of original size [2022-11-20 20:00:51,465 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 502 [2022-11-20 20:00:51,704 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 20:00:51,704 INFO L350 Elim1Store]: Elim1 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 968 treesize of output 705 [2022-11-20 20:00:51,775 INFO L321 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2022-11-20 20:00:51,775 INFO L350 Elim1Store]: Elim1 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 847 treesize of output 784 [2022-11-20 20:00:51,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:51,894 INFO L321 Elim1Store]: treesize reduction 244, result has 14.4 percent of original size [2022-11-20 20:00:51,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 789 treesize of output 747 [2022-11-20 20:00:52,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:52,237 INFO L321 Elim1Store]: treesize reduction 156, result has 13.8 percent of original size [2022-11-20 20:00:52,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 812 treesize of output 770 [2022-11-20 20:00:52,466 INFO L321 Elim1Store]: treesize reduction 92, result has 25.2 percent of original size [2022-11-20 20:00:52,467 INFO L350 Elim1Store]: Elim1 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 971 treesize of output 808 [2022-11-20 20:00:52,571 INFO L321 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2022-11-20 20:00:52,572 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 1014 treesize of output 975 [2022-11-20 20:00:52,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:52,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:52,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:52,740 INFO L321 Elim1Store]: treesize reduction 244, result has 14.4 percent of original size [2022-11-20 20:00:52,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 997 treesize of output 955 [2022-11-20 20:00:52,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:52,971 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:52,971 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:53,008 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:53,008 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:53,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:53,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:53,034 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:53,062 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:53,062 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:53,070 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:53,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 20:00:53,092 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:53,098 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:53,140 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:53,141 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:53,176 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-20 20:00:53,176 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 21 [2022-11-20 20:00:53,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:53,196 INFO L350 Elim1Store]: Elim1 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 13 [2022-11-20 20:00:53,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:53,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-20 20:00:53,390 INFO L321 Elim1Store]: treesize reduction 68, result has 41.9 percent of original size [2022-11-20 20:00:53,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 175 treesize of output 212 [2022-11-20 20:00:53,657 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:53,658 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:53,712 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:53,712 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:53,757 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:53,758 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:53,836 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:53,837 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:53,886 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:53,886 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:53,910 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:00:53,958 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:00:53,958 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 20:00:54,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:54,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:01:01,015 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 816 DAG size of output: 614 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 20:01:01,018 INFO L321 Elim1Store]: treesize reduction 602, result has 65.7 percent of original size [2022-11-20 20:01:01,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 4 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 117 case distinctions, treesize of input 1186 treesize of output 2221 [2022-11-20 20:01:01,742 INFO L217 Elim1Store]: Index analysis took 582 ms [2022-11-20 20:01:11,134 WARN L233 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 658 DAG size of output: 528 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 20:01:11,136 INFO L321 Elim1Store]: treesize reduction 466, result has 68.3 percent of original size [2022-11-20 20:01:11,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 1096 treesize of output 2016 [2022-11-20 20:01:12,257 INFO L217 Elim1Store]: Index analysis took 908 ms [2022-11-20 20:01:23,056 WARN L233 SmtUtils]: Spent 8.94s on a formula simplification. DAG size of input: 658 DAG size of output: 528 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 20:01:23,058 INFO L321 Elim1Store]: treesize reduction 466, result has 68.3 percent of original size [2022-11-20 20:01:23,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 1048 treesize of output 1968 [2022-11-20 20:13:15,558 WARN L233 SmtUtils]: Spent 23.30s on a formula simplification that was a NOOP. DAG size: 690 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 20:13:53,667 WARN L233 SmtUtils]: Spent 23.01s on a formula simplification that was a NOOP. DAG size: 684 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)