./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c24ad121bcc9573550d02da9627a07166858762ae4177dec26b10c884148a83b --- 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-4e7fbc6 [2022-11-23 15:55:10,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:55:10,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:55:10,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:55:10,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:55:10,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:55:10,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:55:10,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:55:10,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:55:10,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:55:10,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:55:10,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:55:10,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:55:10,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:55:10,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:55:10,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:55:10,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:55:10,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:55:10,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:55:10,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:55:10,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:55:10,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:55:10,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:55:10,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:55:10,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:55:10,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:55:10,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:55:10,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:55:10,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:55:10,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:55:10,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:55:10,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:55:10,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:55:10,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:55:10,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:55:10,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:55:10,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:55:10,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:55:10,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:55:10,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:55:10,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:55:10,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:55:10,384 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:55:10,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:55:10,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:55:10,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:55:10,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:55:10,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:55:10,387 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:55:10,387 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:55:10,388 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:55:10,388 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:55:10,389 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:55:10,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:55:10,390 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:55:10,390 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:55:10,391 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:55:10,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:55:10,391 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:55:10,391 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:55:10,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:55:10,393 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:55:10,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:55:10,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:55:10,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:55:10,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:55:10,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:55:10,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:55:10,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:55:10,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:55:10,396 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:55:10,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:55:10,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:55:10,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:55:10,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:55:10,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:55:10,398 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:55:10,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:55:10,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:55:10,399 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:55:10,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:55:10,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:55:10,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:55:10,400 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_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c24ad121bcc9573550d02da9627a07166858762ae4177dec26b10c884148a83b [2022-11-23 15:55:10,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:55:10,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:55:10,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:55:10,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:55:10,825 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:55:10,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i [2022-11-23 15:55:14,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:55:14,748 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:55:14,751 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i [2022-11-23 15:55:14,773 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/data/f89d3ef90/b1381c0ca28c43aaa0395c78f7cb7f85/FLAG0c988bd3a [2022-11-23 15:55:14,792 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/data/f89d3ef90/b1381c0ca28c43aaa0395c78f7cb7f85 [2022-11-23 15:55:14,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:55:14,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:55:14,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:55:14,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:55:14,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:55:14,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:55:14" (1/1) ... [2022-11-23 15:55:14,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4da838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:14, skipping insertion in model container [2022-11-23 15:55:14,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:55:14" (1/1) ... [2022-11-23 15:55:14,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:55:14,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:55:15,545 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_daf2982b-a4fe-4b1f-8464-dba3482c5b09/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i[33021,33034] [2022-11-23 15:55:15,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:55:15,864 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:55:15,924 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_daf2982b-a4fe-4b1f-8464-dba3482c5b09/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i[33021,33034] [2022-11-23 15:55:16,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:55:16,108 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:55:16,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16 WrapperNode [2022-11-23 15:55:16,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:55:16,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:55:16,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:55:16,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:55:16,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,347 INFO L138 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1437 [2022-11-23 15:55:16,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:55:16,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:55:16,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:55:16,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:55:16,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,527 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:55:16,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:55:16,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:55:16,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:55:16,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (1/1) ... [2022-11-23 15:55:16,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:55:16,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:55:16,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:55:16,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:55:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:55:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:55:16,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:55:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:55:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:55:16,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:55:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:55:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:55:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:55:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:55:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:55:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:55:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:55:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:55:16,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:55:17,095 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:55:17,099 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:55:19,408 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:55:20,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:55:20,129 INFO L300 CfgBuilder]: Removed 77 assume(true) statements. [2022-11-23 15:55:20,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:55:20 BoogieIcfgContainer [2022-11-23 15:55:20,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:55:20,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:55:20,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:55:20,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:55:20,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:55:14" (1/3) ... [2022-11-23 15:55:20,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c37552e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:55:20, skipping insertion in model container [2022-11-23 15:55:20,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:16" (2/3) ... [2022-11-23 15:55:20,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c37552e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:55:20, skipping insertion in model container [2022-11-23 15:55:20,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:55:20" (3/3) ... [2022-11-23 15:55:20,145 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-3.i [2022-11-23 15:55:20,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:55:20,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:55:20,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:55:20,248 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@33f3a302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:55:20,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:55:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 133 states have (on average 1.7969924812030076) internal successors, (239), 144 states have internal predecessors, (239), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 15:55:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:55:20,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:55:20,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:55:20,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:55:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:55:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash -810098709, now seen corresponding path program 1 times [2022-11-23 15:55:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:55:20,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248525631] [2022-11-23 15:55:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:55:20,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:55:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:55:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:55:20,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:55:20,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248525631] [2022-11-23 15:55:20,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248525631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:55:20,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:55:20,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:55:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548693663] [2022-11-23 15:55:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:55:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:55:20,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:55:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:55:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:55:20,683 INFO L87 Difference]: Start difference. First operand has 153 states, 133 states have (on average 1.7969924812030076) internal successors, (239), 144 states have internal predecessors, (239), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:55:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:55:23,876 INFO L93 Difference]: Finished difference Result 399 states and 722 transitions. [2022-11-23 15:55:23,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:55:23,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:55:23,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:55:23,899 INFO L225 Difference]: With dead ends: 399 [2022-11-23 15:55:23,899 INFO L226 Difference]: Without dead ends: 220 [2022-11-23 15:55:23,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:55:23,908 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 97 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:55:23,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 365 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 15:55:23,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-23 15:55:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 127. [2022-11-23 15:55:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.212962962962963) internal successors, (131), 118 states have internal predecessors, (131), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 15:55:23,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 163 transitions. [2022-11-23 15:55:23,986 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 163 transitions. Word has length 8 [2022-11-23 15:55:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:55:23,987 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 163 transitions. [2022-11-23 15:55:23,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:55:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 163 transitions. [2022-11-23 15:55:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 15:55:23,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:55:23,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:55:23,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:55:23,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:55:23,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:55:23,994 INFO L85 PathProgramCache]: Analyzing trace with hash 761830316, now seen corresponding path program 1 times [2022-11-23 15:55:23,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:55:23,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780687352] [2022-11-23 15:55:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:55:23,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:55:24,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:55:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136539076] [2022-11-23 15:55:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:55:24,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:55:24,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:55:24,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:55:24,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:55:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:55:25,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:55:25,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:55:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:55:26,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:55:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:55:26,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:55:26,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780687352] [2022-11-23 15:55:26,386 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:55:26,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136539076] [2022-11-23 15:55:26,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136539076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:55:26,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [587142197] [2022-11-23 15:55:26,411 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-23 15:55:26,412 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:55:26,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:55:26,423 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:55:26,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:55:26,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:26,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:55:26,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:26,760 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 15:55:26,762 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 1 case distinctions, treesize of input 33 treesize of output 43 [2022-11-23 15:55:26,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:26,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:55:26,856 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-23 15:55:26,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-23 15:55:26,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:26,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:55:26,953 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 15:55:26,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 15:55:27,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:55:27,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 15:55:27,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-11-23 15:55:27,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:55:27,810 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-23 15:55:27,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-23 15:55:27,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:55:27,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:55:27,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,869 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 15:55:27,870 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 1 case distinctions, treesize of input 33 treesize of output 43 [2022-11-23 15:55:27,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:27,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:55:27,959 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 15:55:27,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 15:55:28,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 15:55:28,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:55:28,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-23 15:55:28,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:55:28,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:55:28,737 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:55:37,560 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 223 DAG size of output: 212 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:45,074 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 239 DAG size of output: 228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:45,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [587142197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:55:45,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:55:45,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-11-23 15:55:45,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743952137] [2022-11-23 15:55:45,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:55:45,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:55:45,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:55:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:55:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=69, Unknown=2, NotChecked=0, Total=132 [2022-11-23 15:55:45,086 INFO L87 Difference]: Start difference. First operand 127 states and 163 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:55:48,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:55:50,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:55:52,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:55:58,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:56:01,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:56:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:56:01,713 INFO L93 Difference]: Finished difference Result 265 states and 340 transitions. [2022-11-23 15:56:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:56:01,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-23 15:56:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:56:01,716 INFO L225 Difference]: With dead ends: 265 [2022-11-23 15:56:01,717 INFO L226 Difference]: Without dead ends: 140 [2022-11-23 15:56:01,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=71, Invalid=83, Unknown=2, NotChecked=0, Total=156 [2022-11-23 15:56:01,721 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 9 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:56:01,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 461 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 211 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2022-11-23 15:56:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-23 15:56:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2022-11-23 15:56:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.194915254237288) internal successors, (141), 128 states have internal predecessors, (141), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 15:56:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 173 transitions. [2022-11-23 15:56:01,766 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 173 transitions. Word has length 52 [2022-11-23 15:56:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:56:01,766 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 173 transitions. [2022-11-23 15:56:01,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:56:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 173 transitions. [2022-11-23 15:56:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 15:56:01,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:56:01,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:56:01,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:56:01,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:56:01,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:56:01,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:56:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash 583681991, now seen corresponding path program 1 times [2022-11-23 15:56:01,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:56:01,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239767422] [2022-11-23 15:56:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:56:01,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:56:02,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:56:02,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895957430] [2022-11-23 15:56:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:56:02,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:56:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:56:02,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:56:02,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:56:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:56:03,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:56:03,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:56:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:56:03,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:56:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:56:03,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:56:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239767422] [2022-11-23 15:56:03,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:56:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895957430] [2022-11-23 15:56:03,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895957430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:56:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1949650371] [2022-11-23 15:56:03,884 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-23 15:56:03,884 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:56:03,885 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:56:03,886 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:56:03,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:56:03,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:03,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:56:04,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,019 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 15:56:04,019 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 1 case distinctions, treesize of input 33 treesize of output 43 [2022-11-23 15:56:04,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:56:04,091 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-23 15:56:04,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-23 15:56:04,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:56:04,169 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 15:56:04,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 15:56:04,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 15:56:04,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-23 15:56:04,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:56:04,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:56:04,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 15:56:04,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:56:04,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:04,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:56:04,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 15:56:05,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-23 15:56:05,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:56:05,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-23 15:56:05,236 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-23 15:56:05,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-11-23 15:56:05,261 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 28 treesize of output 36 [2022-11-23 15:56:05,701 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 15:56:05,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 15:56:05,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:56:05,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:56:05,747 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 [2022-11-23 15:56:05,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:05,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:56:05,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-23 15:56:06,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 15:56:06,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-11-23 15:56:06,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:56:06,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:56:06,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:56:06,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:56:06,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 15:56:06,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 15:56:06,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-23 15:56:06,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:56:06,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:56:06,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-23 15:56:06,878 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-23 15:56:06,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-11-23 15:56:06,902 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 28 treesize of output 36 [2022-11-23 15:56:07,369 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 241 for LOIs [2022-11-23 15:56:07,508 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:56:13,629 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 223 DAG size of output: 212 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:21,326 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 239 DAG size of output: 228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:23,362 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 28)) (.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~user~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 16)) (.cse27 (select |c_#memory_int| |c_ULTIMATE.start_main_~user~0#1.base|)) (.cse28 (select |c_#memory_int| 1)) (.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|)) (.cse29 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 12))) (and (= c_~count_int_int~0 0) (not (= |c_ULTIMATE.start_main_~user~0#1.base| 1)) (< 0 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_main_~user~0#1.offset| (select .cse0 .cse1)) (= (select |c_#valid| 0) 0) (not (= 2 |c_ULTIMATE.start_main_~user~0#1.base|)) (= 72 (select |c_#length| |c_ULTIMATE.start_main_~user~0#1.base|)) (= |c_ULTIMATE.start_main_~altusers~0#1.base| 0) (= |c_ULTIMATE.start_main_~_hj_k~0#1| 4) (= |c_ULTIMATE.start_main_~user~0#1.offset| 0) (= |c_ULTIMATE.start_main_~users~0#1.offset| 0) (= (select .cse2 .cse3) 0) (= 2 (select |c_#length| 1)) (exists ((v_~bitwiseXor_32 Int) (v_~bitwiseXor_31 Int) (v_~bitwiseXor_30 Int) (v_~bitwiseXor_36 Int) (v_~bitwiseXor_35 Int) (v_~bitwiseXor_34 Int) (v_~bitwiseXor_33 Int) (v_~bitwiseXor_29 Int) (v_~bitwiseXor_28 Int)) (let ((.cse19 (let ((.cse25 (let ((.cse26 (select |c_#memory_int| |c_ULTIMATE.start_main_~_hj_key~0#1.base|))) (+ (mod |c_ULTIMATE.start_main_~i~0#1| 256) (* 65536 (mod (select .cse26 (+ |c_ULTIMATE.start_main_~_hj_key~0#1.offset| 2)) 256)) (* 256 (mod (select .cse26 (+ |c_ULTIMATE.start_main_~_hj_key~0#1.offset| 1)) 256)) (* (mod (select .cse26 (+ |c_ULTIMATE.start_main_~_hj_key~0#1.offset| 3)) 256) 16777216))))) (ite (= .cse25 4276993779) 522093 (ite (= .cse25 4277515872) 0 v_~bitwiseXor_35))))) (let ((.cse23 (* (- 1) .cse19))) (let ((.cse16 (let ((.cse24 (* .cse19 256))) (ite (= (+ .cse19 1622558010) 0) .cse24 (ite (= .cse24 0) (+ .cse23 (- 1622558010)) (ite (= (+ (* 257 .cse19) 1622558010) 0) 0 v_~bitwiseXor_36)))))) (let ((.cse21 (* (- 1) .cse16))) (let ((.cse13 (let ((.cse22 (div .cse16 8192))) (ite (= (+ .cse19 .cse16) 4276993779) .cse22 (ite (= .cse22 0) (+ .cse21 .cse23 4276993779) (ite (= (+ .cse22 .cse19 .cse16) 4276993779) 0 v_~bitwiseXor_31)))))) (let ((.cse18 (* (- 1) .cse13))) (let ((.cse8 (let ((.cse20 (div .cse13 4096))) (ite (= .cse19 (+ .cse16 .cse13)) .cse20 (ite (= .cse20 0) (+ .cse21 .cse19 .cse18) (ite (= (+ .cse20 .cse16 .cse13) .cse19) 0 v_~bitwiseXor_32)))))) (let ((.cse15 (* (- 1) .cse8))) (let ((.cse7 (let ((.cse17 (* 65536 .cse8))) (ite (= (+ .cse8 .cse13) .cse16) .cse17 (ite (= .cse17 0) (+ .cse15 .cse18 .cse16) (ite (= (+ (* .cse8 65537) .cse13) .cse16) 0 v_~bitwiseXor_33)))))) (let ((.cse11 (* (- 1) .cse7))) (let ((.cse4 (let ((.cse14 (div .cse7 32))) (ite (= (+ .cse7 .cse8) .cse13) .cse14 (ite (= .cse14 0) (+ .cse11 .cse15 .cse13) (ite (= (+ .cse7 .cse14 .cse8) .cse13) 0 v_~bitwiseXor_34)))))) (let ((.cse10 (* (- 1) .cse4)) (.cse6 (* (- 1) |c_ULTIMATE.start_main_~_hj_i~0#1|))) (and (= (let ((.cse5 (div |c_ULTIMATE.start_main_~_hj_j~0#1| 32768))) (ite (= .cse4 (+ |c_ULTIMATE.start_main_~_hj_j~0#1| |c_ULTIMATE.start_main_~_hj_i~0#1|)) .cse5 (ite (= .cse5 0) (+ (* (- 1) |c_ULTIMATE.start_main_~_hj_j~0#1|) .cse6 .cse4) (ite (= .cse4 (+ |c_ULTIMATE.start_main_~_hj_j~0#1| |c_ULTIMATE.start_main_~_hj_i~0#1| .cse5)) 0 v_~bitwiseXor_28)))) |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (= (let ((.cse9 (div .cse4 8))) (ite (= (+ .cse7 .cse4) .cse8) .cse9 (ite (= .cse9 0) (+ .cse10 .cse11 .cse8) (ite (= .cse8 (+ .cse7 .cse4 .cse9)) 0 v_~bitwiseXor_29)))) |c_ULTIMATE.start_main_~_hj_i~0#1|) (= (let ((.cse12 (* |c_ULTIMATE.start_main_~_hj_i~0#1| 1024))) (ite (= .cse7 (+ |c_ULTIMATE.start_main_~_hj_i~0#1| .cse4)) .cse12 (ite (= .cse12 0) (+ .cse10 .cse7 .cse6) (ite (= .cse7 (+ (* |c_ULTIMATE.start_main_~_hj_i~0#1| 1025) .cse4)) 0 v_~bitwiseXor_30)))) |c_ULTIMATE.start_main_~_hj_j~0#1|))))))))))))))) (= (select |c_#valid| 1) 1) (= |c_#NULL.offset| 0) (= (select |c_#length| 2) 21) (= |c_ULTIMATE.start_main_~altusers~0#1.offset| 0) (= (select .cse27 |c_ULTIMATE.start_main_~user~0#1.offset|) |c_ULTIMATE.start_main_~i~0#1|) (= (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|) (select .cse27 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 4))) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select .cse27 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 32)) 4) (= |c_ULTIMATE.start_main_~_hj_key~0#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) (= (select |c_#valid| 2) 1) (= |c_#NULL.base| 0) (= |c_ULTIMATE.start_main_~user~0#1.offset| |c_ULTIMATE.start_main_~_hj_key~0#1.offset|) (= (select .cse2 .cse1) |c_ULTIMATE.start_main_~user~0#1.base|) (= (select .cse28 1) 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~user~0#1.base|) 1) (= (select .cse0 .cse29) 0) (= (select .cse0 .cse3) 0) (= (select .cse27 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 36)) |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (= |c_ULTIMATE.start_main_~users~0#1.base| 0) (= 48 (select .cse28 0)) (not (= |c_ULTIMATE.start_main_~user~0#1.base| 0)) (< |c_ULTIMATE.start_main_~user~0#1.base| |c_#StackHeapBarrier|) (not (<= 12 (mod |c_ULTIMATE.start_main_~_hj_k~0#1| 4294967296))) (= (select .cse2 .cse29) 0))) is different from false [2022-11-23 15:56:34,512 WARN L233 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 272 DAG size of output: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:46,551 WARN L233 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 272 DAG size of output: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:47,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1949650371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:56:47,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:56:47,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-11-23 15:56:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040507309] [2022-11-23 15:56:47,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:56:47,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 15:56:47,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:56:47,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 15:56:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=153, Unknown=6, NotChecked=28, Total=272 [2022-11-23 15:56:47,577 INFO L87 Difference]: Start difference. First operand 137 states and 173 transitions. Second operand has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:56:50,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:56:52,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:56:54,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:56:56,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:56:58,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:57:03,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:57:06,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:57:09,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:57:10,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:57:15,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:57:15,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:57:15,556 INFO L93 Difference]: Finished difference Result 267 states and 342 transitions. [2022-11-23 15:57:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 15:57:15,557 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2022-11-23 15:57:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:57:15,559 INFO L225 Difference]: With dead ends: 267 [2022-11-23 15:57:15,559 INFO L226 Difference]: Without dead ends: 142 [2022-11-23 15:57:15,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=85, Invalid=153, Unknown=6, NotChecked=28, Total=272 [2022-11-23 15:57:15,561 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 8 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:57:15,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 749 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 358 Invalid, 6 Unknown, 75 Unchecked, 27.9s Time] [2022-11-23 15:57:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-23 15:57:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-23 15:57:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 132 states have internal predecessors, (145), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (17), 7 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-23 15:57:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 179 transitions. [2022-11-23 15:57:15,599 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 179 transitions. Word has length 65 [2022-11-23 15:57:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:57:15,599 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 179 transitions. [2022-11-23 15:57:15,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:57:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 179 transitions. [2022-11-23 15:57:15,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 15:57:15,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:57:15,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:57:15,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:57:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:57:15,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:57:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:57:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash 501515405, now seen corresponding path program 1 times [2022-11-23 15:57:15,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:57:15,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626449737] [2022-11-23 15:57:15,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:15,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:57:16,001 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:57:16,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514114842] [2022-11-23 15:57:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:16,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:57:16,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:57:16,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:57:16,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf2982b-a4fe-4b1f-8464-dba3482c5b09/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:57:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:17,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:57:17,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:57:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:57:17,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:57:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:57:17,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:57:17,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626449737] [2022-11-23 15:57:17,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:57:17,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514114842] [2022-11-23 15:57:17,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514114842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:57:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1057712236] [2022-11-23 15:57:17,879 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-23 15:57:17,879 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:57:17,879 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:57:17,880 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:57:17,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:57:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:17,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:57:18,036 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-23 15:57:18,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-23 15:57:18,092 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 15:57:18,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 15:57:18,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 15:57:18,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:57:18,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-23 15:57:18,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:57:18,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 15:57:18,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-23 15:57:18,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 15:57:18,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:57:18,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:18,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:57:18,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 15:57:18,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 15:57:18,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-23 15:57:18,965 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-23 15:57:18,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 66 [2022-11-23 15:57:19,060 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-23 15:57:19,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-11-23 15:57:19,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 15:57:19,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-23 15:57:19,357 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 [2022-11-23 15:57:19,362 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 [2022-11-23 15:57:19,367 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 [2022-11-23 15:57:19,421 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-23 15:57:19,422 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 53 treesize of output 56 [2022-11-23 15:57:19,461 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 15:57:19,462 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 47 treesize of output 50 [2022-11-23 15:57:19,494 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 15:57:19,494 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 43 treesize of output 46 [2022-11-23 15:57:19,550 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 14 treesize of output 10 [2022-11-23 15:57:19,556 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 14 treesize of output 10 [2022-11-23 15:57:19,564 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 16 treesize of output 12 [2022-11-23 15:57:19,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-11-23 15:57:19,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-23 15:57:19,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-23 15:57:19,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:19,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:20,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:20,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:20,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:57:20,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-11-23 15:57:20,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-23 15:57:20,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-23 15:57:21,215 INFO L217 Elim1Store]: Index analysis took 563 ms [2022-11-23 15:57:29,226 WARN L233 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 60 DAG size of output: 18 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 15:57:29,227 INFO L321 Elim1Store]: treesize reduction 96, result has 17.9 percent of original size [2022-11-23 15:57:29,227 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 10752670 treesize of output 10752673 [2022-11-23 15:57:30,412 INFO L217 Elim1Store]: Index analysis took 936 ms [2022-11-23 15:57:33,553 INFO L321 Elim1Store]: treesize reduction 144, result has 12.7 percent of original size [2022-11-23 15:57:33,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 10752675 treesize of output 10752677 [2022-11-23 15:57:45,585 WARN L233 SmtUtils]: Spent 11.65s on a formula simplification. DAG size of input: 67 DAG size of output: 32 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 15:57:45,586 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-23 15:57:45,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1986 treesize of output 1476 [2022-11-23 15:58:16,838 WARN L233 SmtUtils]: Spent 31.08s on a formula simplification. DAG size of input: 90 DAG size of output: 45 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 15:58:16,839 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-23 15:58:16,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2005 treesize of output 1824 [2022-11-23 15:58:18,262 INFO L217 Elim1Store]: Index analysis took 1115 ms [2022-11-23 15:58:51,352 WARN L233 SmtUtils]: Spent 32.40s on a formula simplification. DAG size of input: 252 DAG size of output: 150 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 15:58:51,353 INFO L321 Elim1Store]: treesize reduction 2438, result has 32.1 percent of original size [2022-11-23 15:58:51,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 1542 treesize of output 2093 [2022-11-23 15:58:52,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:58:53,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:58:53,058 INFO L217 Elim1Store]: Index analysis took 725 ms [2022-11-23 15:58:53,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 89 [2022-11-23 15:58:53,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:58:53,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-23 15:58:53,374 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 15:58:54,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:58:54,203 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 71 [2022-11-23 15:58:54,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:58:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:58:54,565 INFO L217 Elim1Store]: Index analysis took 201 ms [2022-11-23 15:58:54,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2022-11-23 15:58:55,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:58:55,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-23 16:02:47,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:02:47,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13